I also feel the 10.25" crush sleeve is undersized. I have removed one that didn't crush evenly - variable height when measured. Probably a factor in that particular diff shedding pinion teeth.
Ford had revised the pinion on the 10.25/10.5 at least twice. Short, long, and finally thicker.
Ford had revised the pinion on the 10.25/10.5 at least twice. Short, long, and finally thicker.