I have a delta lathe that is about 6 years old that I am having trouble turning the tail stock wheel. It seems to stick almost like its catching on something. I never noticed it until I started turning S/P mills for christmas drilling the holes was a real pain because it took a lot of force to turn the wheel even before I was cutting wood. Any ideas on what I might do to fix this or do I need a new tail stock? It has 3 allen head screws with what I thought was a cap but when I removed them nothing came apart. I looked on the Delta parts sight and it looks like on their pictures it may come apart but not sure how. Are you supposed to grease or oil it? Thanks for any and all help.