I noticed while disassembling my new X3 that with the gib extremely loose the Y bed wobbles back and forth as it goes through it's travel. I replaced the lead screw and it doesn't seem to have helped anything. It looks like the bearing head is not parallel to the travel but I have no way to check it. I now have a new bearing head on the way but if that ends up not being it does anyone have other suggestions?
Also I seem to be having trouble removing the Y bearing head, the X bearing head came of easily however.