Tronxy X5S Marlin 1.1.9

The original display works, selection knob runs smoothly (menu down clockwise, enable REVERSE_MENU_DIRECTION if you'll want the original feel).

AutoTemp disabled but Filament Change is enabled (under the Tune menu)
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The Filament Change procedure Configuration_adv.h:

PAUSE_PARK_RETRACT_LENGTH 6 // 2(mm) Initial retract.
avoid the blob

FILAMENT_CHANGE_UNLOAD_LENGTH 850
The filament should stop a few cm before exiting the feeder. The value depends on the lengt