No... I was moving the rotary very slowly, to see if it would respond to a single "click"... however, I made the following discovery: the problem seems to occur only when I program these buttons as "aircraft-specific" - If I DO NOT program as aircraft-specific, (leave the check box clear) THEN they work as documented. If I only program them as aircraft-specific, then I get this "almost-every-other-click" response. I'm happy with making this programming non-aircraft specific.
I know, that's not the way it's supposed to be... I'll keep experimenting... Thanks for following my ramblings - it shows you care.
Antonio
BTW, I'm integrating a GoFlight RP48 with a $180USD Chinese 8" touch-sensitive automotive LCD display to display and control the RealityXP Garmin 530 - I use the touch-sense feature of the LCD for the 14 pushbuttons, and the GoFlight rotaries for the, well, rotaries, which are not gracefully controllable using the touch panel. Works great (especially now that I've got the rotaries to respond click-by-click) - the resulting device is about the same size as a real 530 (I have 530's on both of my real aircraft - my avatar is a picture of my 310's panel and if you look closely you can see a 530)