When I run out the quill on my Powermatic lathe, it is as smooth as the day I bought it from about the 3" mark until it unthreads. From 3" down to 0, it gets gradually stiffer to the point it almost takes two hands to turn. I pulled it all apart today, checked for damaged threads, debris, & lubricted the assembly. Out of the tailstock, the two pieces thread fully with ease. When reassembled, It's not as stiff, but still a far cry from what it should be. Any chance I have bent the quill from drilling to large of a hole and too far extended? Any help or thoughts are appreciated in advance!