So a little more info. I just took the whole z axis out, cleaned, loosened back lash nut, lubed up rod, made sure everything was lined up and square. Still having same issue, possibly worse now? My lead screw turns very easily by hand.
It’s skipping going up and down. If I put a little finger tension on rod while its going up and down, it skips worse. Couplers not slipping. About 95% of the time it doesn’t do it. Now I’m starting to wonder if the stepper is bad? Is that even a possibility.