I had a .15 LA on mine and it was over powered, if I had a .10 I would just stuff everything I could up front to help with the CG. It's just a glider and it will fly with a 1/2 A engine. As for take off runs I used to just toss mine on a small slope to get it moving, once in the air a stiff breeze will fly it. Great airplane for kicking back in a chair and looking for thermals. More fun then the mile high club?? I think Quigly is doing something wrong!!! Or just not right!!