I am using the SLB with the Spindle kit and gSender. I changed all the gSender settings for use with the spindle kit. Now, when I use the screen commands to move the XY position to a position to change a tool and then use the gSender screen command GoTo XYZ 0 at the completion of a carve, the command drives the Z down to the full mechanical limit. gSender still has the job displayed without any reset. Using the touch plate to set the Zero of XYZ works fine for setting up the job.
@jayfmiller first thing I’d suggest is going through all your Firmware settings and seeing if there’s any suspicious deviation in the settings (marked as a yellow highlight in the Firmware tool) and revert any of the ones that don’t look correct. Otherwise, I could only comment further if you could re-create the issue you’re seeing (maybe remove the tool from the spindle before clicking goto so you don’t ruin anything) and then attach in the Forum the .ZIP Diagnostic file so we could see more specifically what might be happening on your machine