My promaxes are grinding pretty bad. I pulled the axle and can't for the life of me get the old bearings off. I thought these were press-fit, but I couldn't even tap them from the other side. Any ideas? While I'm at it, I threw my chain a few months ago at high speed and bent the dust shield on one side all to hell. I've looked on QBP's page and can't find a listing for them, anyone know a source for them?