Interesting. On my 30-10, it just fell off. Can't imagine on the 30-09 it is a different design.

You might want to check with Plettenberg if they can send you a spare one. It can't be a very expensive part.

It might actually be that if you heat it, the ring will expand more then the bearing, because it is not a very hard metal. So, following that logic you might want to put it in the freezer. Maybe then it comes out easy.

Volkert