I didnt look up any values, thats just what i thought was the effect of aileron drag or adverse yaw. At least thats what describes it the best. I am getting adverse yaw when using ailerons, stops when ailerons are neutral again and this is much more pronounced with the turbo arrow IV for me. It even swings a bit from side to side afterwards, the turbo arrow III does not show this at all. The difference is so big that i noticed it right away when switching from the III to the IV.