I'm using 2 servos on the elevators of my Laser. I used mix 6. (elevator/aux3) channels. Everything works fine, but if I turn the Aux 3 knob, one elevator works, and if I don't keep it set to zero, the centering on that side will be off. I have the switch choice set to On, and I thought that would turn off the Aux 3 knob. What's the right way or slave channel to use to correct the problem, or will that knob always be live?