Well, I crashed mine a while back due to an aileron coming unhinged. Make sure you don’t use the CA hinges that come with the plane, they are the wrong material. Use some steel pin hinges or something strong. I do however remember that the CG in the instructions was a little off. I ended up putting my ignition and both batteries in the cowl along with the 40cc SPE gas engine to get her to fly straight and level. This plane is great for the price, but would recommend not using any of the hardware that came with it. This plane just fell apart on me in flight during some simple 3D aerobatics. When I received the plane the cowl was cracked and looked horrible. Contacted Will hobby and they blew me off as long as they could. Once I left negative feedback for them on EBay, the cowl showed up. You get what you pay for. Good Luck, hope this helps.