^ ^ ^ woodnbow,
I called my BIL this morning and he said that he can't do anything with a part that small, he was trained to weld big stuff like pipes. He said he probably wouldn't tear it up any worse but he wouldn't be able to fix it either. I know a local gunsmith I'll check with next week and see what he says about a cheap fix.
I've been thinking about a super simple set up like this:
I'm thinking fill the chamber nearly to the rim with pyro p and seat the balls with that neat little setup and that should leave no air pockets as long as I fill the chamber so the balls set on the powder before cranking them home?