Hi to all, first post so go easy on me ok.

I have a Chinese router 2500x1300x200. I know, probably a mistake but ..............

The Y axis (2500) is driven by 2 steppers with their own MA860H drives. The step and direction inputs are connected in parallel so should track each other. However if one of the motors should miss a few steps due to high cutting forces at one end of the X stroke, or maybe one end of the gantry being knocked whilst the machine is off surely the x axis will be pushed out of square with the Y axis. With me so far? Any ideas how can I prevent this from happening? How is it done on "professional" machines?

Thanks for any thoughts,

Bob.