Peter Ledermann at Soundsmith used to repair ARC stuff-he recapped and retubed a Dual 75a that I’ve owned since new. It is now due for another go-over (haven’t had it running for more than a decade but still).
I found a local guy, Atomic Tube here in Austin, whose main focus is antiquarian gear but he can repair pretty much anything tube-related. I hate shipping this stuff- much prefer to drop it off personally.
When Lamm was still in NY and I lived there, same drill. We’d drive the equipment to him and usually, turn around by Vlad (RIP) was very quick.
Bill Thalmann (also RIP) was great- I dropped off a car load of gear for him to restore back in 2017.
I agree about location- if you can find someone good who is local, you may be better off. You hear horror stories about some repair services, but I’ve never had a problem.
