The falling block on my T/C Omega has become loose...i.e. the action will open if I shake the gun around a bit, and it takes little effort to open or (loosely) lock the action. I've removed the barreled action and it appears that whatever causes the friction and lockup is in the inner most part of the action (not visible from the outside). How is the action assembled/disassembled, and is this something I can fix myself? Is the action held together by punch pins? That is what it looks like. It feels like something needs to be "bent" back into place in order for it to lock up positively.

OK...I probably shouldn't say it has "become" loose. It was dropped about 4 feet from the bench down to the concrete the other day. Held zero though, but I just discovered the loose action.