Let's define the problem area, the bottles have a ring at the top, that's for the cap, then there is a flange, it's the length of the flange that gives me grief. The old bottle styles have the flange that is about 5/8" from the top of the neck, others are as little as 3/8" (16mm & 10mm approx)(by eye), it's the short flanges that upset my capper. I had collected a load of Tyskie bottles, they work , but they don't leave me with any confidence that I have been successful, so I binned them all . You can't afford a bad capping after all that effort. The Tyskie however is a smashin drink.