Did you get movement trying to move them by hand before taking them apart?
Its been doing it for about 700 miles, and I've spend several hours over that time under there grabbing and shaking and banging on ****! It was flat pissing me off to the point I was driving hard to make it break! Crawled under Monday and saw the grease seal was falling off. Then I could see it.
Once I beat it out, the damn thing fell apart.