diff --git a/Marlin/src/gcode/calibrate/G28.cpp b/Marlin/src/gcode/calibrate/G28.cpp
index dc93ba3d2f..01c6050155 100644
--- a/Marlin/src/gcode/calibrate/G28.cpp
+++ b/Marlin/src/gcode/calibrate/G28.cpp
@@ -264,7 +264,7 @@ void GcodeSuite::G28() {
   reset_stepper_timeout();
 
   #define HAS_CURRENT_HOME(N) (defined(N##_CURRENT_HOME) && N##_CURRENT_HOME != N##_CURRENT)
-  #if HAS_CURRENT_HOME(X) || HAS_CURRENT_HOME(X2) || HAS_CURRENT_HOME(Y) || HAS_CURRENT_HOME(Y2) || (ENABLED(DELTA) && HAS_CURRENT_HOME(Z))
+  #if HAS_CURRENT_HOME(X) || HAS_CURRENT_HOME(X2) || HAS_CURRENT_HOME(Y) || HAS_CURRENT_HOME(Y2) || HAS_CURRENT_HOME(I) || HAS_CURRENT_HOME(J) || HAS_CURRENT_HOME(K) || (ENABLED(DELTA) && HAS_CURRENT_HOME(Z))
     #define HAS_HOMING_CURRENT 1
   #endif
 
@@ -292,6 +292,21 @@ void GcodeSuite::G28() {
       stepperY2.rms_current(Y2_CURRENT_HOME);
       if (DEBUGGING(LEVELING)) debug_current(PSTR("Y2"), tmc_save_current_Y2, Y2_CURRENT_HOME);
     #endif
+    #if HAS_CURRENT_HOME(I)
+      const int16_t tmc_save_current_I = stepperI.getMilliamps();
+      stepperI.rms_current(I_CURRENT_HOME);
+      if (DEBUGGING(LEVELING)) debug_current(F(AXIS4_STR), tmc_save_current_I, I_CURRENT_HOME);
+    #endif
+    #if HAS_CURRENT_HOME(J)
+      const int16_t tmc_save_current_J = stepperJ.getMilliamps();
+      stepperJ.rms_current(J_CURRENT_HOME);
+      if (DEBUGGING(LEVELING)) debug_current(F(AXIS5_STR), tmc_save_current_J, J_CURRENT_HOME);
+    #endif
+    #if HAS_CURRENT_HOME(K)
+      const int16_t tmc_save_current_K = stepperK.getMilliamps();
+      stepperK.rms_current(K_CURRENT_HOME);
+      if (DEBUGGING(LEVELING)) debug_current(F(AXIS6_STR), tmc_save_current_K, K_CURRENT_HOME);
+    #endif
     #if HAS_CURRENT_HOME(Z) && ENABLED(DELTA)
       const int16_t tmc_save_current_Z = stepperZ.getMilliamps();
       stepperZ.rms_current(Z_CURRENT_HOME);
diff --git a/Marlin/src/gcode/queue.cpp b/Marlin/src/gcode/queue.cpp
index d11b2823f2..c638dc17ee 100644
--- a/Marlin/src/gcode/queue.cpp
+++ b/Marlin/src/gcode/queue.cpp
@@ -281,7 +281,7 @@ void GCodeQueue::flush_and_request_resend(const serial_index_t serial_ind) {
 
 static bool serial_data_available(serial_index_t index) {
   const int a = SERIAL_IMPL.available(index);
-  #if BOTH(RX_BUFFER_MONITOR, RX_BUFFER_SIZE)
+  #if ENABLED(RX_BUFFER_MONITOR) && RX_BUFFER_SIZE
     if (a > RX_BUFFER_SIZE - 2) {
       PORT_REDIRECT(SERIAL_PORTMASK(index));
       SERIAL_ERROR_MSG("RX BUF overflow, increase RX_BUFFER_SIZE: ", a);
diff --git a/Marlin/src/module/motion.cpp b/Marlin/src/module/motion.cpp
index a56831c214..c820ce3599 100644
--- a/Marlin/src/module/motion.cpp
+++ b/Marlin/src/module/motion.cpp
@@ -1194,6 +1194,7 @@ FORCE_INLINE void segment_idle(millis_t &next_idle_ms) {
         case DXC_DUPLICATION_MODE:
           if (active_extruder == 0) {
             // Restore planner to parked head (T1) X position
+            float x0_pos = current_position.x;
             xyze_pos_t pos_now = current_position;
             pos_now.x = inactive_extruder_x;
             planner.set_position_mm(pos_now);
@@ -1201,7 +1202,9 @@ FORCE_INLINE void segment_idle(millis_t &next_idle_ms) {
             // Keep the same X or add the duplication X offset
             xyze_pos_t new_pos = pos_now;
             if (dual_x_carriage_mode == DXC_DUPLICATION_MODE)
-              new_pos.x += duplicate_extruder_x_offset;
+              new_pos.x = x0_pos + duplicate_extruder_x_offset;
+            else
+              new_pos.x = _MIN(X_BED_SIZE - x0_pos, X_MAX_POS);
 
             // Move duplicate extruder into the correct position
             if (DEBUGGING(LEVELING)) DEBUG_ECHOLNPGM("Set planner X", inactive_extruder_x, " ... Line to X", new_pos.x);
diff --git a/Marlin/src/module/temperature.cpp b/Marlin/src/module/temperature.cpp
index 0f6395b127..3a19d60d92 100644
--- a/Marlin/src/module/temperature.cpp
+++ b/Marlin/src/module/temperature.cpp
@@ -953,8 +953,8 @@ int16_t Temperature::getHeaterPower(const heater_id_t heater_id) {
 
 inline void loud_kill(PGM_P const lcd_msg, const heater_id_t heater_id) {
   marlin_state = MF_KILLED;
+  thermalManager.disable_all_heaters();
   #if USE_BEEPER
-    thermalManager.disable_all_heaters();
     for (uint8_t i = 20; i--;) {
       WRITE(BEEPER_PIN, HIGH);
       delay(25);