[rmneder]

Okay, I figured out the problem. I'm stupid. The mounts have a plastic insert in them that go through the bolt holes. When I remove the mounts from the crossmember they pulled out of the mounts and remained in the crossmember. It looked like they were part of the crossmember itself. When I tried to reinstall the mounts I was trying to get them reseated on the plastic inserts and there was no way that was happening. So problem solved. I feel really dumb and was going to let this thread drift off into obscurity but decided to bite the bullet and confess.