I know this is an old thread but rather than start a new one I would like to recommend Brian Mickleboro. My Rolleiflex 3.5F had a sticky shutter release, dodgy 1s shutter speed and a depth of field indicator that had lost its connection to the aperture dial (the usual problems of a camera that had not been used for years). He turned it round in a week for a very reasonable cost and I have a 3.5F that feels new! He seems a nice guy to deal with on the phone too.
Mr. Brian Mickleboro,
Herts, CM23 5LT
Phone 01279 755862
'Formerly of The Studio Workshop, London. Mr. Mickleboro is factory trained and has 30-40 years of experience in servicing Rollei cameras'