Does anyone have any suggestions on how to tighten up fit of hammer on the tumbler square?Specifically its a lyman lock and the hammer rocks on the square,but the gun fires fine.I think it happened due to multiple dry fires since the nipple was peened over also.A little tin foil works for a while,but eventually loosens back up.I was going to weld a bead in square of hammer and file to fit,but figured I'd check to see if someone has a better(smarter?)idea.