Weird Y axis location

Good evening.

I’m having trouble with my S9 and Lightburn. I attempted to frame an image, with the head set at real 0,0. But when I pressed Frame, it slammed into the extrusion. When I checked rhe Mpos, it had X=0, Y=113.20, despite the head being at 0,0.
I have no limit switches or anything. How can I tell the software to either use Wpos instead of Mpos, or tell it that it’s 113mm out of sync with reality?
Thank you

See if there is an offset in the G54 offset parameter. In the Console window, enter $# and you will see the offsets. If it is not all zeroes, then enter in the Console window G54 x0 y0 z0. Then see if that clears it up.