Thread: Base and ring compatibility

Easing the angled shoulders on the bottom of the ring will help. They should be firm but not super hard to turn with a suitably padded 8" Crescent. Although there are several similar systems offered by different makers they all have minor differences. It is easy to fix the ones that are tight, but not so easy to fix the loose ones. Just break the leading edges with a needle file for a start, and then ease the shoulders with wet & dry paper backed by a narrow file. Patience and frequent testing is the answer.