Hi, Can someone pls help me out in telling me whether the drooped down wingtip or the drooped up wingtip is better for an RC plane? I have read that the drooped down wingtip is better but none of the planes in production(commercial airliners) use it. They use the drooped up wingtip! Also, is an angle of approx. 120 degrees to the wing surface alright for the positioning of a new wingtip?