diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index a22e6dc90..44e3e3d30 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 eddf51b53..c16666c48 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 8f4828684..63ab14e94 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 3ad29213a..653c1b448 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 6b9015bd0..b85e925de 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 74fce16af..9dd44e7c4 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 038e19a76..68af64426 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 6c9fadb18..4f21df5bd 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 6187556c7..78d542d70 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 293214d2a..ded7a7cc7 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 168a398b5..02d428738 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 6b9015bd0..b85e925de 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 b974eea21..da605cadf 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 f3f15070c..9631948e3 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 f3f15070c..9631948e3 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 b17c39f20..37d185b58 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 fa9cdbd9f..01edfc19c 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 48936b316..ae793ed75 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 364a8a943..1c47f8560 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