My Werramat has refused to release its 100 mm lens! I'd had no problem in the short time I've owned this camera in rotating the release ring for the bayonet mount to change the 50 mm to the 100 mm, but now the ring won't budge. Other than a pipe wrench does anyone have any ideas? Also the 50 mm's focus is very stiff, probably needs a CLA. Any thoughts on a good repair person?
