CNC module leveling

Hi all ,
I’m a newbie of 3 modules of SnapMaker .
Once I tried to mill a PCB with CNC module , then left side of PCB was dug deeply and right side was shallowly .
I thought the CNC module didn’t have well level against to the bed .
It’s difficult for me to adjust level the CNC module every time after attaching the module .
I’d like that the firmware can calibrate like 3D module .

FYI : I use Ki-CAD , pcb2gcode to mill PCB . And not succeed yet .

Thanks .

The silence is deafening with this problem. Any luck figuring this out?

just top up the discussion in another similar topic in this forum Non-level CNC bed?