i dont know your experience level so im assuming youre a beginner. if you have the money get a 6 channel computer radio ( futaba 6exa is 200). it has 6 model memory so you dont have to buy a new radio for every plane, just a flight pack. it will also couple channels 1 and 5 using the receiver (it might be 1 and 6 im not sure) for dual aileron servos, and if you want them, flaperons (ailerons that also function as flaps). it might just be a faulty y connector