Problems with zero location

I am having a repeat issue with my zeros relocating immediately on running a roughing pass (attaching gcode). This is a new issue, and I am not clear what I may be doing wrong. Longmill MK2 with SLB, gsender 1.57. I am using the autozero touchplate and everything seems to be setting fine, cuter moves to X0Y0Z1 correctly, but as soon as I hit run, the XY zeros reset. Code is generated with CC Pro, and I’ve never had an issue with this one prior to this run.

1 201 rough pass.nc (988.7 KB)

Has this continued to be an issue for you @mhforbes? Looking at the file I don’t see any reason for the zeros to reset

This continued for several test cycles. I see no reason either. I punted and (since I meant to anyway) am in the midst of installing the closed loop motor kit, which basically replaces everything and will go with the new computer I am also installing,. So it will be a whole new machine soon. I am now trying to figure out how to mount my SLB-EXT, since I want it outside of my cover.

And… I found the mounting brackets!

Ok roger that @mhforbes, just let us know if you see this crop up again.