I baught a Genmitsu 4030 Xl, while i was using one of the Y axis arm got in tough with a nearby stationary object and stopped moving. I stopped the machine and after when i tried to restart the y axis in not moving properly. After it moves 15 cm it stops (Y axis) and you need to support to keep it moving.while moving back as well it stops frequently and you need to give little force to keep it moving
That sounds like misalignment from “racking” the machine. The question is, I think, whether something was bent or just forced out of alignment.