I recently go the astrosyn dampers and started installing them on my Taz 5. They went on the X and Y axes no problem and work amazingly. Hit the wall trying to remove the coupling for the Z axis. I’ve given a few full rotations loosening three of the set screws, the other seems like it was stripped or like something is stuck inside the top, they hex key doesn’t go in at all. I was unable to remove the coupling from either the threaded rod or the stepper shaft. There was also what seemed to be a lubricant coming out of the set screw holes as I worked on them.
Has anyone encountered such a problem? Any recommendations to get around this? I really don’t want to start drilling these things out and having to replace the couplings, if not more. Thanks in advance.