I had a great experience with a local watch repair shop.
They specialize in repairs, brought in the rep that needed service, handed it to him told him I knew it wasn't real, but knew it had an ETA movement and asked if he would have a problem looking at it.
Read about him and his father in a local business journal, their watchmaking history went way back, so they were old school and experienced.
He gladly worked on it and was very impressed with the quality.
Since then he has done minor adjustments on other reps of mine: removed crystals, etc...
Nice guy who as some else mentioned appreciated a customer that he could talk watches with for a bit.
He likely thinks I know someone on Canel Street and go to NYC often, which is fine with me.
I wouldn't worry about, rejection is the worst that can happen.
A random watch repair store is not going to attempt to confiscate your watch or anything crazy ;
find as it appears you have a shop that services watches / clocks AND is not an AD for any Swiss brands.
This differs from other suggestions, but personally I would not call first.
In my experience if I called this guy would likely have told me no on the phone, as before seeing my rep was very suspicious about rep quality.
Until taking a few apart, he honestly thought every little piece was going to be plastic.
It shocked him that many of the components are of the same quality as the Gens.
Sapphire crystal for example, seals/gaskets in place, screws insetad of pins, etc...
Cheers,
M