Exceeding limits for no reason

post tool table?

I'd suggest making the tool change location

TOOL_CHANGE_POSITION = 0 0 -1

so it does a full retract and stops just before limits

Try this from G code reference;

31. G49 Cancel Tool Length Compensation

G49 - cancels tool length compensation

It is OK to program using the same offset already in use. It is also OK to program using no tool length offset if none is currently being used.

I prefer X0 and Y0 to be center of travel.

The issue is that axis doesn't take tool length compensation into account. I posted a fix for that here:

forum.linuxcnc.org/20-g-code/44244-g43-1...axis?start=10#227259