Im sure that somewhere on this site the answer to this question exist, I just cant find it. I have two new XL5s and a new Traxxas transmitter /receiver and new nihm battery. I am trying to get the XL5 and the transmitter to calibrate the throttle. All settings on the transmitter are neutral. All things being correct, I start to calibrate the XL5 according to the instruction and the green light comes on, then the red light, I release and the red light stays on............and on ........and on. All other functions can be calibrated. This has happens on two new XL5s. Anybody got a solution............PLEASE