#define SHARED_EXTRUDER_HEATER 0

#define CONFIGURATION_H

#define ORIG_X_STEP_PIN         15

#define SUPPORT_LASER 1

#define SUPPORT_LASER 1

#define SDSUPPORT 1#define SDCARDDETECT 51

#define LANGUAGE_EN_ACTIVE 1

#define CONFIGURATION_H

I finally changed the #define FEATURE_TWO_ZSTEPPER 0 and the Z is decoupled (yay).

#define SUPPORT_LASER 1  <------ needed to support Laser

#define FEATURE_TWO_ZSTEPPER 1

#define CONFIGURATION_H

#define FEATURE_TWO_ZSTEPPER 1

#define HAVE_HEATED_BED 0

#define EXT0_STEP2_PIN ORIG_E0_STEP_PIN

#define EXT0_STEP2_PIN ORIG_E0_STEP_PIN

#define Z_PROBE_X_OFFSET 0

#define FEATURE_DITTO_PRINTING 1 

//#define U8GLIB_ST7920

#define UI_ENCODER_SPEED 2