I'm nearing the end of building a 4*40 and am installing the radio receiver/battery etc. I am using the old 72 Mhz system and am on channel 37 so when I purchased the reciever combo (Futaba) I got the crystal for channel 37. I installed the crystal last night, hooked everything up and turned it on. The servos twitch a little as you'd expect but my transmitter does not control anything. Nothing happens when I turn my transmitter on or off. The frequencies match (72.530) so I'm kind of at a loss. Am I missing something here?

Thanks!