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>>>>FYI - The control channel and group buttons which you speak of might be easy to jostle but you have to hold them down for several seconds to make them enter configuration mode. If you just bump them, all it does is blinks the LED indicator.<<<
not on any of the four units I own. one quick press and they're in screwyou mode.
fwiw, they seem to operate a lot better on 7d and 1d3 than on 5d, 1ds2.....so far. still messing with them before the return date.
Are you sure about the button thing? It's right in the manual and I configured mine and it works as I stated. Maybe the model you have is a different rev than mine.