A comment about putting aftermarket knobs on the c-mores. I "had" an extended knob on my c-more and was wondering why, during a stage, the dot kept getting dimmer. The knob was turning backwards (not a click switch but rather the standard switch). I didn't understand why it was happening so I called the service dept. at C-More. He was very nice, asked me "Do you have any kind of knob extension on the switch?" I answered yes and his response was "take it off and your problem will most likely go away. Almost 90% of all my (C-More) service issues is from people putting an aftermarket knob on the switch." I don't remember if I told him how the C-more was mounted.
I've removed the aftermarket knob but haven't been back to the range yet to see the knob not turn backwards while emptying a mag or two. Also, I'm using a sideways C-more mount, which probably exasperates the problem. Gravity is a funny thing.....