Mike, you could telephone John Lee at Shutter-box on 03 9809 4711.
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If John doesn't answer then his wife Mei will. She repairs the cameras and he (mainly) repairs lens and some of the really way out stuff.
The best part is that you will actually talk to the person who is going to do a repair.
I've known John for well over 30 years, first through motorcycles, now photography, he is a personal friend.
My last repair with him was a clean and re-align my 55 Micro Nikkor, works better than ever.
Mick