Thanks for all the help. I checked the blades and no part was hitting anything, I tapped on the handle and it moved a bit then it moved more and after a bit I could turn it all the way around though not freely but the shaft was moving around in the motionless cog. I took the blades off and attached vise grip and it did turn and the cogs started moving. The teeth that were at the bottom came around and they had a lot of gunk which I cleaned off and the teeth there look fine. Kept turning and it got easier so I put the blade back on and used the handle and soon it was spinning with no problems at all except if i start out too fast the shaft will slip so needs tightening, the head of the set screw is missing half so need to replace it I guess. Put the cover on fan and it blows air great though there is some hitting of the blades so needs some adjustment. What do I need to do to keep it in good shape? I like the way it looks though I see some like to paint them. What is a good lubricant for gear box?