Well guys it dose fly wahoooo lol the plane is tail heavy but you can set the trim to make it fly true I am going to add some wight to the front of the plane. the O. S 40 works fine it is a slow take off but when it is up it fly's fast. The plane has a good responsd and is fast in the sky. The plane lands great. well it looks like I was the tester for this plane and thank god it did not do me wrong. I will be trying to get it on video and you all can see it fly.