Sadly the main control dial (thumb wheel) on the back of my GM5 has begun to work intermittently. The push button aspect of the dial works fine, but the scroll/dial functionality is so intermittent it is basically useless. This dial is so important on the camera and with out it I am unable to change any of the key exposure values like Sutter Speed, Aperture, exposure comp etc. . . Just wondering . . Anyone else have this happen to theirs? Any button setting changes I haven't spotted that would give me back this control without using the rear control wheel? Anyone had good experience with Panasonic UK repair out of warranty? Thanks for any input.