Wow.. there has to be a better solution than mixing in opposite aileron to counteract the differential.

Perhaps matching servos, but this could be a pain in the butt. Or remove the two servos and adding one with two pushrods.

My Venus II has one servo and a dual pushrod setup to control the elevator movement. I used Sullivan Carbon rods and a method to join them at the servo end. The servo was in the regular servo tray. The pushrod guides were secured at hard points along the formers to prevent any flexing. At least they both move the same amount. But, I do have a Super Star 120 that has a pair of elevator servos and this was one of my concerns. I am anxious to see the replies to this.

CGr