I have a Great Planes Extra 300S .60 and have recently put a DLE 20 engine on it. the plane's weight is around 8.5 lb without fuel (I was hoping for less weight). The plane takes off in a very short time and flies great, the engine has a lot of power, But the problem is when I come in to land. As I approach on final the wing tips start to drop hard left and right (stalling I'm guessing), but when I speed up the plane to stop the stalling it will not set down on the runway, it just keeps flying. I was thinking of using flaperon mixing to try and solve the problem. Will this work or just make it worst? How much flaperon should be used?