K, that's along the lines of what I was currently thinking. I think I have them slightly too tight right now. They currently don't take constant force to turn. It goes up and down slightly. I think I want to back it off until they require consistent force to turn rather than jerk a bit through turning as they currently are. I might end up talking to my father in law (designs and sells hydraulic systems) and see what he can get for replacement bearings that might work better.

Thanks for the great explanation printbus. That helped a lot.