diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index a22e6dc9020600514c6ab9a43b1ee6b7acef1c4e..44e3e3d30affbf661ee5e8a9ded1a487d6cab512 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -285,6 +285,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine/test this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/configuration_store.cpp b/Marlin/configuration_store.cpp
index eddf51b5382c67864eeb5d03f6702139e8cd125b..c16666c4845a3703c3cb24be575260228eebb69c 100644
--- a/Marlin/configuration_store.cpp
+++ b/Marlin/configuration_store.cpp
@@ -963,7 +963,11 @@ void Config_ResetDefault() {
     COPY(delta_diagonal_rod_trim, drt);
     COPY(delta_tower_angle_trim, dta);
   #elif ENABLED(Z_DUAL_ENDSTOPS)
-    z_endstop_adj = 0;
+    #if defined(Z_DUAL_ENDSTOPS_ADJUSTMENT)
+      float z_endstop_adj = Z_DUAL_ENDSTOPS_ADJUSTMENT;
+    #else
+      float z_endstop_adj = 0;
+    #endif
   #endif
 
   #if ENABLED(ULTIPANEL)
diff --git a/Marlin/example_configurations/Cartesio/Configuration_adv.h b/Marlin/example_configurations/Cartesio/Configuration_adv.h
index 8f4828684ba5f3387eca0c5e3a172395ea876d81..63ab14e943c40111e56a31a9d8338b6452021ce1 100644
--- a/Marlin/example_configurations/Cartesio/Configuration_adv.h
+++ b/Marlin/example_configurations/Cartesio/Configuration_adv.h
@@ -285,6 +285,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/Felix/Configuration_adv.h b/Marlin/example_configurations/Felix/Configuration_adv.h
index 3ad29213af5d090062b4d916782e3ddd5c682bc3..653c1b4486983609c22cb4d08de2cff53ee8f7e4 100644
--- a/Marlin/example_configurations/Felix/Configuration_adv.h
+++ b/Marlin/example_configurations/Felix/Configuration_adv.h
@@ -285,6 +285,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/Hephestos/Configuration_adv.h b/Marlin/example_configurations/Hephestos/Configuration_adv.h
index 6b9015bd085b234d3846e80f6f8d8a21b68c161e..b85e925de41dfbaf0791ed2324e7f30852404b7f 100644
--- a/Marlin/example_configurations/Hephestos/Configuration_adv.h
+++ b/Marlin/example_configurations/Hephestos/Configuration_adv.h
@@ -285,6 +285,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/Hephestos_2/Configuration_adv.h b/Marlin/example_configurations/Hephestos_2/Configuration_adv.h
index 74fce16af6f9896fdcdfa61fae6b77468cfc2d19..9dd44e7c4624d84a5af8e15ff3c8edbbdacadce5 100644
--- a/Marlin/example_configurations/Hephestos_2/Configuration_adv.h
+++ b/Marlin/example_configurations/Hephestos_2/Configuration_adv.h
@@ -285,6 +285,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/K8200/Configuration_adv.h b/Marlin/example_configurations/K8200/Configuration_adv.h
index 038e19a762f025d8c88545d5b12771b71e8c35d8..68af64426457b62b439a02cc136e969405e4ce5a 100644
--- a/Marlin/example_configurations/K8200/Configuration_adv.h
+++ b/Marlin/example_configurations/K8200/Configuration_adv.h
@@ -298,6 +298,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/K8400/Configuration_adv.h b/Marlin/example_configurations/K8400/Configuration_adv.h
index 6c9fadb181d7a7e123804175f82a62f4dfa8bb6f..4f21df5bd4f7422456ca288c9e7c5c99db4cd053 100644
--- a/Marlin/example_configurations/K8400/Configuration_adv.h
+++ b/Marlin/example_configurations/K8400/Configuration_adv.h
@@ -285,6 +285,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/RigidBot/Configuration_adv.h b/Marlin/example_configurations/RigidBot/Configuration_adv.h
index 6187556c7850ea701216fbaf1b3589ef7ae09422..78d542d70a8a905b58add0724d556f5aef965f05 100644
--- a/Marlin/example_configurations/RigidBot/Configuration_adv.h
+++ b/Marlin/example_configurations/RigidBot/Configuration_adv.h
@@ -285,6 +285,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/SCARA/Configuration_adv.h b/Marlin/example_configurations/SCARA/Configuration_adv.h
index 293214d2a0ea4130043a98a8d83e015ee41b7f8e..ded7a7cc7b7078815da02816aa31546d65881336 100644
--- a/Marlin/example_configurations/SCARA/Configuration_adv.h
+++ b/Marlin/example_configurations/SCARA/Configuration_adv.h
@@ -285,6 +285,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/TAZ4/Configuration_adv.h b/Marlin/example_configurations/TAZ4/Configuration_adv.h
index 168a398b5d384d8ca8aa8c308efb793c94f7e71d..02d4287386599bf25492618dddac1b0ef9493ae1 100644
--- a/Marlin/example_configurations/TAZ4/Configuration_adv.h
+++ b/Marlin/example_configurations/TAZ4/Configuration_adv.h
@@ -293,6 +293,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/WITBOX/Configuration_adv.h b/Marlin/example_configurations/WITBOX/Configuration_adv.h
index 6b9015bd085b234d3846e80f6f8d8a21b68c161e..b85e925de41dfbaf0791ed2324e7f30852404b7f 100644
--- a/Marlin/example_configurations/WITBOX/Configuration_adv.h
+++ b/Marlin/example_configurations/WITBOX/Configuration_adv.h
@@ -285,6 +285,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/delta/flsun_kossel_mini/Configuration_adv.h b/Marlin/example_configurations/delta/flsun_kossel_mini/Configuration_adv.h
index b974eea21f6fa99a1c9aa1fa92823085d9768091..da605cadf2962e049fe950d35f52761379e5f271 100644
--- a/Marlin/example_configurations/delta/flsun_kossel_mini/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/flsun_kossel_mini/Configuration_adv.h
@@ -285,6 +285,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/delta/generic/Configuration_adv.h b/Marlin/example_configurations/delta/generic/Configuration_adv.h
index f3f15070c8d67ed5eb1484ebba3af00dff9806ee..9631948e3ed8c00c6621f58a9a7c5955e597ff18 100644
--- a/Marlin/example_configurations/delta/generic/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/generic/Configuration_adv.h
@@ -285,6 +285,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h b/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
index f3f15070c8d67ed5eb1484ebba3af00dff9806ee..9631948e3ed8c00c6621f58a9a7c5955e597ff18 100644
--- a/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/kossel_mini/Configuration_adv.h
@@ -285,6 +285,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h b/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
index b17c39f2050d2da8d3f1a27cc8cc2ade40e77f29..37d185b58dbfcb2099dc65dce95d6f754d867473 100644
--- a/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/kossel_pro/Configuration_adv.h
@@ -290,6 +290,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h b/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
index fa9cdbd9fef742d18f586813820eba472315873d..01edfc19cbd28183e29d0465a9018cea0d9264e7 100644
--- a/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
+++ b/Marlin/example_configurations/delta/kossel_xl/Configuration_adv.h
@@ -285,6 +285,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/makibox/Configuration_adv.h b/Marlin/example_configurations/makibox/Configuration_adv.h
index 48936b3168b231ec31e7183d11af367946723a76..ae793ed75590b4ebbbd4f1961007f87608352810 100644
--- a/Marlin/example_configurations/makibox/Configuration_adv.h
+++ b/Marlin/example_configurations/makibox/Configuration_adv.h
@@ -285,6 +285,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS
diff --git a/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h b/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
index 364a8a94397ac556f8eefef06f97cb0029f69def..1c47f8560f6414999b8fa09e5d89c9d1033a4eaf 100644
--- a/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
+++ b/Marlin/example_configurations/tvrrug/Round2/Configuration_adv.h
@@ -285,6 +285,7 @@
 
   #if ENABLED(Z_DUAL_ENDSTOPS)
     #define Z2_USE_ENDSTOP _XMAX_
+    #define Z_DUAL_ENDSTOPS_ADJUSTMENT  0  // use M666 command to determine this value
   #endif
 
 #endif // Z_DUAL_STEPPER_DRIVERS