Well I might be the one to try one aileron servo. With the existing tray. I will make the linkage as short as possible, make sure there is no slop and seal the gap. I will be using a 5945 servo at 6 volts. The only reason I am considering this Is because my aeroworks 31% edge was designed for 2 servos for the airelons and I only run one 5945 servo on each one and it is not even close to being centered, but my gaps are sealed. I dont fly fast all time but on occasions I do. My linkage is also very short. The only thing different is the counter balances on the airelons. The edge has never givin me any problems. I have flown this plane for a year now and mostly 3d maybe Im just lucky or asking for trouble.
Mike