The strangest thing happened yesterday with the second transceiver that I was about to send back to Horizon. I decided to give it one more try before mailing it in. I hooked it back up in the car, went back through the binding steps, double-checked that my transmitter was on PPM, and it decided work properly and bound itself to the transmitter module. I tested it out again and it works fine so for the time being, it escapes being mailed in to Horizon for evaluation.