I'll just quickly mention something here that "may" be related to the newest release (or has taken me this long to notice *blush* )... I don't have any of the earlier versions to test.
Re: vertical and horizontal servo controls... I just noticed, during some testing, that as I went to quickly click the release button on the horizontal I was instead hitting config... it seemed to me that I always used to hit the center button to "release" the servos, horizontal or vertical... Has something been altered? Hopefully not my memory