Thanks guys It sounds as if the matchbox is the way to go. Everything is identical on both sides, the same length control rods and both horns are set the same. Someone at work suggested to take the servo horn on the one with 2 1/4 up and 1 3/4 down and move the horn a couple of teeth on the servo to balance it out. Do you think this would work. I honestly believe that when Airtronocs took this servo appart and reversed it caused some of the problem.