Ok, Ive checked every setting I could of, verified proper approach speeds with corresponding flap settings. I need some other advice on this issue. So recently with the last couple updates, including the latest RC 1, doesn't matter which aircraft I'm flying, IXEG 737-300, Rotate MD80, and default aircraft are ALL affected. Takeoff is fine no problems. during approach when I slow to proper airspeed and extend slats, a slight roll to the right occurs. flaps 1 to 5, the roll is gradually worse, with full left aileron deflection and left rudder needed to maintain level flight, flap setting beyond that and aircraft rolls out of control and nosedives into the ground. flaps and slats retracted, problem goes away. Once on the ground, I notice the aircraft tends to be "blown" around almost like a paper airplane. So I'm not sure what else to do.... thoughts anyone ??????