Thanks for guys' advice and encourage.. This help me a lot, and I also record my last fly time. I fly the FT-Versa Wing last saturday from 7:00 AM to 8:30 AM in the morning. I can feel the improvement of my flying skill. a little, but fun! so happy~ I feel I can touch the sky now. keep up But at last my wing is broken can't repair anymore. So I must start to build a new one. I just like this wing. thanks rc guys, and flitetest. I think I will build more here are the video.