I wanted to follow up with the results of my 'quest.' Based on his reputation, I went with Steve McCormack's recommendation above. It helped that the shop was only an hour away. All I can say is thanks Steve, and thanks Steve. Steve Pappin repaired my MC240 and C22. Through the entire process it was a great pleasure to deal with him. He is thorough, honest, documents everything on paper and in photo, reasonable in prices, and knows what he is doing. I highly recommend him to anyone in the area who needs some repairs done - and he does SS as well. FWIW, my priority here was having the gear restored to optimal original operating condition. I have confidence now when I turn on my system that I am getting what I would have got 60 years ago, when they were new.
