Please help. My wife was pulling out the bottom tray and the spray arm underneath got hung on the tray and she broke the plastic bolt that help the lower spray arm in place. I ordered a new bolt and put all back together. However, the bolt gets tight before the lower spray assembly gets tight and then when the spray arm turns, it keeps getting hung in the lower basket. When I put it back, there was a plastic race that went on first, then the spray hub, then a plastic ring, then the bolt. Should there be another spacer or washer that allows the bolt to hold the lower spay hub tighter so it does not wobble?

I have this same problem; I have replaced all 4 parts (spray arm, both ring bearings, and the nut), and lower arm still gets stuck in the lower rack occasionally. Any other suggestions? Thanks