If your crystals dont' match ie single or dual conversion that might be a problem too. The reciever is a single conversion but the transmitter as I found out on the 7CAP is a dual conversion crystal. Right now I am having a problem with the trottle on mine. Seems like all the trottle controls are reversed and some how it fryed my reciever but the servo's still work and I cannot figure that one out either. Any help on this would probably help both of us.

Tom