JustDeamin, I have the Hobistar 60 and have had it set up both ways. Putting two servos in the wing was as simple as enlarging the servo bay and cutting a new tray out of lite ply. I wanted to experiment with flaperons. The plane lands and takes off just fine on a short runway w/o the flap function. I did not fly it long with the two servos before I went back to a one servo set up and I believe it is a little smoother with just the one. But that may just be all in my mind. Anyway there is no need for a second servo.