RE: E-flite PT-19 450 ARF flaws need help
The upward movement of one is greater than the downward movement of the opposite one. This can be achieved with a computer radio provided the servos are wired separately with no "Y" connector. Or mechanically by moving the servo arms 1 or 2 clicks forward toward the leading edge (with the servos at center) and then you will have to readjust the clevis for the control surfaces so they are flush.