It is exactly this problem that keeps me from investing more time and energy into Xplane. with few excepttions every plane rolls left on takeoff. It doesn't matter how ailerons or rudder is trimmed it just wants to do it. In my estimation this is the biggest flaw in Xplane. Some of the third party guys seem to have fixed the issue quite well (i.e. the Airbus series). That business about the engine torque pulling is nonsense.FSX does not do it and that is a joy to fly. Xplane is an utter frustration. I am closing Xplane, trying to forget that i paid money for it, and will stick with the realism of FSX.