I did a search here after breaking the tops off one or two bottles each batch lately using my wing capper. The HBT opinion was either the wing capper itself or a heat related problem from using the extra hot sanitizing setting on the dishwasher. I keg and bottle about 50/50, so figured Id just live with it.
SWMBO just came back from the flea market with this. Looks old, but tried it out and it works fine. Problem solved!