Acdii isn't a troller, nuff said. My full wing cub did the same thing so the first thing I did was as suggested and with the radio on and my hands off the sticks I just rolled it down a small hill. It went sharp left. I had the LG mounted a bit off. After I got that straightened out the plane was still a big drifter but after a bit of time I got used to it. It was never as bad as my Fokker D-VII though. That plane rolled straight but on take off it wanted to go sharp left every time. Once I knew what it was going to do then as scale said, practice!!