How are servos mounted? Surface mount where top of servo sticks out of wing, or on a hatch where only servo arm sticks out? If surface mount, put arm on the other way. Will look strange but will work, will require relocating control horn. Same deal if in hatch, but only if slot in hatch is straight. If at an angle because of wing shape, etc, won't work. Just take one hatch out and re-install other way around. Again might require relocating control horn.

Andy