I have not extended any leads on battery or esc. Ihave tried the aerial in the usual postion up to the fin, along the the wing and along the bottom of the fuselage, not always in a straight line but in a zig zag too, and it aint made no difference. The models in question are a rcm pelikan wild cap with axi 2820 10, tower pro 60 amp ecs running on 3s lipo with futaba r 137f reciever. blue arrow champion shock flyer with blue arrow brushless motor, tornado esc and r114f futaba reciever. i have a mini funtana with e flight motor (inrunner)tower pro esc r114f reciever and it has never Glitches. ps i got a funjet for xmas and any suggestions on a fast setup would be most welcome, cheers