Tailstock quill seemed to be getting harder to turn recently and yesterday during a deep 3” forestner bit cut it nearly froze up. Took two hands to get it to return. Took the quill out and could not find any gunk or burrs. Cleaned and lubed but little difference in turning difficulty. Placed the quill on the table saw to check for it being “ bent”. Could see a couple of thousands of light in one spot but otherwise seemed to roll smoothly. Read up on other people’s similar experiences but seems perhaps I have somehow bent the quill enough to cause it to bind like this. Or could the lead screw get bunged up and be causing this problem? Any suggestions before I shell out $$ for a replacement