McIntosh MC-60 Amplifiers

I own a pair of McIntosh MC-60 mono amplifiers. I'm interested in recommendations from other Goners on where to get them professionally serviced and perhaps updated to meet more current standards. They sound quite good with the exception of some hum. Any names, phone numbers etc is most welcome.
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Audio Classics in Vestal, New York. He has done many of these and does factory service for Audio Research, Pass and Audio Note among others.
Audioclassics in upstate NY or DeWick repairs in TN, use whoever is closer to your location.