I have a Spektrum DX6i with an AR600 receiver in a Flyzone Sensei. I’m having trouble getting them to bind. Any ideas? I follow the directions but the amber light comes on steady when I plug in the battery. I get the 3 beeps then nothing but single beeps after that. With bind plug in the receiver and holding the bind switch and turn on the transmitter nothing happens just continuous beeps and no bind. What gives?