I took it in to Steve's Camera in Culver City, CA, which is the normal repair shop on which I have settled. He is reputed to have a lot of knowledge on these cameras.
Steve checked out the camera and gave me an estimate. The camera needs a CLA and new shutter curtains. The parts are $150. Labor is $235. Additionally, a CLA on my Summitar would be $125 labor. The lens service is not absolutely needed, but it does have a relatively big hair in it and the aperture ring is a bit stiff, especially in cool weather.
I've never used Steve's but that price sounds reasonable. DAG is around $280 for a CLA and I believe Sherry is close.