I think, or I hope I figured out the problem. After comparing this machine with my other combine I found that someone had put a thicker support plate in behind the gearbox and another on the stop sign. The added thickness threw the bearing position off. Who ever did it did such a good job that I didn't notice it at first. To fix the problem I reversed the bearing and put the locking collar on the inside. The manual does say to push the cylinder all the way in. Alan