Pancho at Pro Sound here in St. Louis (314-647-4900) worked on my 1971 Sorado twice (several years apart), did great work both times. The first time was reviving it after it had sat idle for a few years and the second time, two years ago, was for a pesky hiss. Not the fastest repair shop in town but he does excellent work.
Two years ago my new-to-me Model T was rehabbed by another local shop, which did an excellent job but it was expensive.
Based on a respected friend's strong recommendation, Obeid Khan at Vintage Amp Restoration (314-631-5030) got my recently acquired 200S up and running. Really good work, affordable rates.