Wanted to add another recommendation, for Leica repairs. I will also heartily endorse the work of Malcolm Taylor. I've had to get into Leica the cheap way, buying slightly dodgy but useable lenses.

For very reasonable prices, he's brought an old goggled 35 Summaron and a rigid 50 Summicron to almost good as new spec. He's legendary for his skill - he has actually fabricated parts to restore historically valuable cameras - and he offers lens recoating amongst his services.

His turnaround time is very rapid. And a phone conversation with him is always a very pleasant and instructive interaction!