It is easy enough to change the Transmitter on the AirHogs from channel A to B or C, (just slide the channel switch from A to B or C). My question is how do you change the receiver inside of the helicopter itself to another channel? My son has a Havoc on channel A, and I just bought a "BUG" copter that is also on channel A. Needless to say, when we try to fly together, both heli's crash immediately. I thought there might be a switch inside the helicopter that could be switched, but no luck. I'll try to load a few photos of the inside of my "BUG".