The Mojo needs nothing whatsoever doing to the wing. It's by far the best-flying model I've ever flown, and I just love it. I only started this thread to check if anyone had tried sharpening-up the tail-end leading edges - and with what results. The wing I really wouldn't touch at all as I can't imagine anything being better than the stock otem (actually, I wouldn't change the tail-end either now that I come to think about it )