I put longer servo arms on to increase my aileron throws because they were a little short with the new servos, and that not only got my roll rate back, but it increased the flaperon deflection. Without changing the radio settings, I had some very slow landings and short takeoffs today using flaperons. They definitely slow the plane down a lot. It did tend to get a little unstable at the 50% setting if I let it get too slow. My plane weighs 4 lbs. 14 oz. with no fuel.