I bought my U can do in june and got it in July. I put it togther and it seemed fine until i got to the control rods. When i got to that point, the control rods seemed to flex and the surfaces could move about 1/2 an inch. So I my dad bought some carbon fiber rods and some heavy duty servo arms and the plane seems fine. I've been flying this plane for about a month and this plane fly's great. I put a O.S. 91 4-stroke on mine and it seems to pull up just fine. I'm running a 15X6 prop and it loads down the engine but gives perfect response. The plane fly's great and i would recamend it to any intermediate flyer.