G Sender 1.0.6 not completing travel

I flashed the GRBL, set the router at front left, 0 all, goto Calibrate, set the Y at 400 mm, continue. the travel is 365 mm and stops 35 mm or 1.5 inches short. What am I doing wrong?

Hi Art, if you have a LongMill then it sounds like something is really off there. I might recommend first checking the mechanics of the machine before trying to fix this through software because - for instance - if the coupler attaching the motor to the lead screw was loose or if the v-wheels are too tight then it would cause less movement than expected.

Does it fall short in only the Y direction or does it also do that in the other directions too?