The plates are parallel to each other that’s the first thing I checked. The bearing is also seated properly. One observation is that the recess for the bearing is not a tight fit. It’s a slide in fit, but you can push it in and out with your fingers with a little pressure. I don’t really see that as to much of a problem because I think it would still hold the outside of the bearing just fine. Just a observation. I will definitely try to sand the end of the lead screw, but i honestly don’t think that’s the issue. I have been wrong before though! Lol…each plate is cracked at one of the bolt together points. It’s no ones fault they cracked but mine!…don’t care to pay for them I would just like to get another set coming. Thanks a lot for your help, I appreciate it.