Help Quick Please! Ring gear install question???

[90'5.0 Conv]

Well, I've come this far and haven't had a prob till now. I got the pinion gear in and the crush sleeve torqued perfect so I was happy with all that but now I have just installed the ring gear assy. and everything looked ok till I torqued down the caps. After that, I can't move a thing. So I loosen them up and it's still stuck. It's stuck (won't turn or anything) until I bang on the ring gear assy. in an effort to get it out. I don't see anything move but it will loosen up after a few good hits. By the way, when it does spin and the caps aren't tight the wear pattern is perfect. Could i possible not have the races on the bearings good enough? Could the cap be pinching the race causing the bearing to lock up. I just come in from outside because I was frustrated. I can't seem to even get the ring gear assy. out now. Oh and for the people that haven't read my other posts, I have ford racing 4.10's that I'm replacing the 2.73's with. I used all the original shims. Please help if you have any ideas.

Thanks, James