Thanks loswave, i will test out another servo, as the problem also happens when its not buzzing, i can try it without taking the other servo out, ill just unplug it.

Rush 7, i was unsure this set up would work a couple of years ago, but as i had the TX already and a very poor hitec rx, i thought i try a jr, heard (at the time) the r700 was very good at cutting interferance for a non fancy one (pcm?) But i was pleased to discover this combo does work, though the out puts arnt what they say, ie plug the alerons in to throttle, and elevator to something else rudder is the only one that matches i think, but seems to work great, well at least it did before this issue, but having used the r700 for some time now im fairly confident its not the problem.

Thanks guys, i get to work testing my other servos.

Joe