[alloyspec]

I run a 6030 and sometimes some 4020s and fadal told our maintenence deptartment that if you jog to a limit on a fadal and leave it there it maintains a steady load on the motor and will burn up boards and/or motors.
The simplest way around this is after the last tool runs, cancel the offsets an put in a Y9.0 or Y14.0 move to bring the table out to you with the program.
It must have someting to do with the way the software limits are set up in the controls.You might also check to make sure your cold start position is centered on the table . All it takes is someone to cold start it out of position one time to throw everything off.
This can be related to your other post about c-axis. Sometimes my machine gets an error an an Axis, but it says it is on a different Axis. Maintenence says an error shows up as a stray bit of info somewhere and the control tries to put it someplace.