Well I got the knife edge problem taken care of, as it turns out the servo I had on the rudder was bad. I replaced it with a high torque metal gear servo and my ucd knife edges like crazy.
Next question:
I'm trying to put in a mix in my 9c to slave the elevator to the rudder to take care of some of the coupling in knife edge. I got the mix turned on and working but it only moves one of the elevator servo's when I give rudder input. Can anyone tell me what I need to do to get both elevator servo's to move when slaved to the rudder?

Thanks