Ok guys, built another truck yesterday, I had an HPI steering steering servo, but the direction is opposite of my Traxxas 2056 servo. I can change in the GT3C easy, but that gets old since I'm using the same controller for both my trucks, which of the red/black/blue servo wires do I transfer to make it switch directions? My first thought is red/ black, assuming the blue is sensor? Thanks.

sorry sir it does not work that way, use the tx.
you could attempt this
http://www.youtube.com/watch?v=EK_FdRTenl0

Well shoot, lol, thanks for that. I'll just live with it till I get the right servo.

Why not use a different model number to save the settings for each truck?