My Showtime would snap at less than half throttle and low throws,the only thing that helped some was feeding in some opposite rudder during the maneuver.(opposite to the way it snapped) I ended up in a throttle off dive(like starting a parachute)several times and it snapped during the pull-out,nearly lost it. I couldnt even think about walls/parachutes down low,which is what 3-D is all about. It also rocked gently in harriers & nothing would make it lock,not spoilerons,not aileron. It wasnt dangerous but harriers look best when locked in, and landings are not good idea when rocking. I didnt have it long enough to "play" with many set ups,just CG a little bit.(lateral & for-aft were perfect). I think they all need some tweeking but the Showtime needed several things at least.(it was HEAVY too!,over 10lbs porker!) The only problem I have with the X100 is tail heavyness, and that is easy to fix.