my pilots side PTT button sometimes goes on hiatus for a few seconds. I usually have to push it 4 or five times and then it comes to life. Co-Pilots side doesnt do this (or its used so infrequently that I havent noticed it). It stopped long enough for ground control to get a little irritated with me yesterday. It stopped over in the puget sound area and I flew over to Bellingham and had new PTT buttons installed and the problem still persists, any ideas? Seems to be worse the 1st time I use it before a flight. i.e. i usually have to fumble with it a few presses before my 1st radio call then I usually dont have any more problems with it. Yesterday, seemed a little worse.