If you do decide to sent to USA there is good feedback out there for Essex Camera in the state of New Jersey.
I bought a III that had ribbon repair/replacement just recently before I purchased it and the repair was done by Essex.
It is bang on so far going by exposure results (don't own a shutter speed tester).
The camera was cla'd and i is working smoothly in all regards except the meter
(they dont work on selenium meters)
Unfortunately, the excellent repairman I used that specialized in prewar Contax rangefinder recently passed on.