A few months ago, I wrote about the incredibly crappy customer service that I got from Nikon. I am a "Nikon Professional Services" member, and you would think that I might get some kind of respect or service as an NPS member. You would be laughably wrong.
I had just bought a used Nikon lens and wanted to know if this was a "US" lens that Nikon would repair if need be. Nikon refused to tell me. They told me that I would need to send the lens in to one of their repair facilities in order to get the answer to my question. Ridiculous!
I just discovered a facility in Culver City (thanks, photo forums) that repaired a Leica and Canon lens for me. I was thoroughly impressed by their communication and service, and so I recommend them here. If you have a Nikon or Canon lens or body that is either "gray market" or "US-warrantied", I am pretty sure that Steve's Camera Repair will be able to service your lens or body, with speed, efficiency, and quality.
Here's their contact info:
Steve’s Camera Service Center
4355 Sepulveda Blvd
Culver City, CA 90230