I use www.camerarepairs.com
in Avon, INdiana....I live a 40m drive away
in business since the 1970's, repairs both film (not leica), and digital plus lenses, MF and AF
I have had all my used cameras and lens cleaned and or repaired with no return repairs.
I have a Nikon FE in his shop now for a film advance repair and a CLA....
6m warranty also
I will be sending to Bob at www.camerarepairs.com
Nikon F2 I just recieved that has a sticky mirror when I use f/2.8 or faster (weird, I know),
and a self-timer repair + a general CLA.
2nd EDIT: 6/24/2016
Bob is concentrating on digital cameras now...he will still clean adjust lenses though.
email him (link above) and ask if he repair your Film camera... (no Leicas... too much trouble to be a "Leica Repair" shop with the amount of Digital business he has
because he has some very large national accounts