HI CKH22! A few years ago I built a plane that was absolutely symetrical in every respect, you could not tell right side up from upside down. This was the most even handling plane I've ever flown. It was also the ugliest! Anyway, with an identical amount of rudder area above and below the centerline, and with the elevator centered on the thrust line, none of the tail surfaces put any counter productive torque on the plane in K.E. This plane is almost as easy to fly in K.E. as it is R.S.U. When the model design strays too far from this idealized[but ugly] example, that's why some planes behave poorly in K.E. Ample rudder area above, and below the fuselage centerline probably has more to do with great K.E. behavior, than stab placement.