Pinion seal woun\'t go in as far as old one! Ok, I noticed the rear diff leaking oil from the pinion seal. I go to get the seal. I bring the old one in and get one. They look exactly the same to me. So I go to pound it in and the dang thing still sticks out 3/16". A good amount of the seal is in the housing so I put the yoke on and am driving it, but I can't wheel because the seal was sticking out too far to put the dust cover on. I pulled the seal out and measured from the outside of the housing to the shoulder inside of the bore and measured how far the seal is going into the housing, and it seams like thats as far as it will go. What is going on? The original seal was completly in when I pulled it out. I think I might go get a shorter seal and put that in, but I would like to know if any of you have had similar problems?