Some posts go so far as to indicate that the id of the hole in the bell is off center and a special jig is needed to recut the center of the bushing off center to align it. Also, I don't see why anybody would keep buying bushings that had the incorrect id. Maybe the first bushings that came out were incorrect id. Plus I've never seen a bushing that was cut off center. It doesn't make sense that Ford would cut the bushing hole off center. Every bushing I ever installed was a perfect fit with no machining. I never had one leak or bind up in the pump. I think that the real common problem is aligning the pump cover on center of the bell. Then to make matters worse, Ford said the pump gears were "powdered metal"...just to make the whole scenario even scarier..