I just picked up a tree 2UV mill and have begun fixing a few small things that I've noticed. The current situation is that even with the spindle lock off, it is very difficult to raise and lower the spindle. Not smooth and easy like it should be. I also found that several of the splines on the shaft that raise and lower the spindle were sheared off. How does the spindle get removed so I can further inspect and clean? Also, the machine came without the yoke for the collet closer. Are those available anywhere?