ok I just turned on the Tx to center the servos, and there is some SEVERE chatter in all of the servos. They don't even respond to the inputs really.

I put aileron in channel 1, elevator in 2, throttle in 3, rudder in 4 and the red wire from the on/off switch went into the 8/batt port, which was the last one down. Tx on, on/off switch turned on, and the aileron servo goes nuts with the rest chattering non stop

Any ideas?

EDIT: Forget it. I had the Tx set to PCM. Changed it back to PPM and it works fine now. Why won't it work in PCM?