You might call Precision Camera in Niles, Illinois just outside of Chicago. He is the warranty repair person for Arca Swiss and he services other high-end speciality brands. I've been to his shop, and he has a very impressive looking amount of equipment for repairs. Don't know if he repairs Rollei, but he has repaired a couple of Schneider lenses for me. Super nice guy, and he appears to be one of these people who can fix anything.