I think you are right. It almost has to be this. The mechanic that mentioned old Fords w the same style had the same issue... has this been a design flaw from way back when that is still occuring because 1) old stock parts and 2) copy of the KH calipers? Or is my play more than what factory cars had back then? Yes, we had the same issue with the cotter pin alignment being in the wrong place. We did use that clear high temp grease that is used on circle track racing. I was also wondering if I have a set of wheel bearing that are just made poorly. They are new but that doesn't mean anything these days. Thanks!