thanks guys for the ideas, yes they are 7.4 volt packs and yes i am using regulators. also the servo's are car servos but whem i told frank noll (mister futaba) which servos i was going to use he said there wouldn't be any problem. also i haven't even started the engine yet this is all happeneing with the engine off. also this is happeneing with the transmitter in very close proximity of the airplane but with the antenna down. also the same servos are in the ailerons without any flutter would the srvos be better at say 5.8 volts? any more ideas? thanks. darryl