Have you thought about going to something like this?

http://www.thompson-barrels.com/proddetail.asp?prod=BH_TC+7010

You could always send it to Bellm's and have it replaced. I have a couple buds who have had them install different hinge pins. This guy isn't cheap, but does outstanding work from what I've heard.

http://www.bellmtcs.com/store/index.php?cid=7