I have 2 Strykers. One that has been upgraded and one stock. I was wanting to put the stock radio in a Graupner Terry, but the servos mirror each other. What can I do to make them work independently? I also been wandering what the mystery port is too...looks like some sort of mixing port for a "Y" connector or something?

Zero,
If you have the old style, yellow version of the Rx. Those mystery pins are jumpers.
If you put a connector between two of them, I belive it's the first 2 you will get regular function of servos vs mixed version you have now.

Yeah, that's what I was thinking. I'm going to the local hobby store in a couple of days and I'll ask the radio tec if I can do that. Thanks