Well, I actually got it to the repair shop today (last week was a busy one at work). You may recall that my Black Beauty won't trip the flash.
Russ said that it's likely a set of contacts in the shutter mechanism that trigger the flash that wear out commonly (after 20 years or so <g>). Or, sometimes they don't wear out, but just go out of adjustment or something. He didn't sound too concerned, but I'll get an estimate in a week or so. That's good news (they won't usually do an estimate if it's unrepairable). I mentioned that the thin weather-stripping around the prism cover (that I removed to see if all the contacts/solder joints looked okay) needed to be replaced. He seemed more concerned that such thin stripping may be hard to find - if that's their biggest problem, then I'm happy. Further reports as new developments arise... cheers, frank -- "Sharpness is a bourgeois concept." -Henri Cartier-Bresson