Hi jcomm. I do not subscribe to Dan's 'fix',...there is a reason BenS cautioned him and I would not make any recommendations or expend any effort to alter the torque in the MU2 as I've flown the darn thing and it simply has a ridiculously strong roll tendency; however, I fully understand the desire for users tweaking to their comfort level though, after all, it is your personal enjoyment you are seeking, but folks are on their own on this one. The torque in x-plane is fine, its real, and accurate and mathematically I can demonstrate it. What is not real and accurate though are a whole host of other factors that exacerbate the perception of the effect though so I can easily understand why some folks would want to "turn it down" to compensate....its just happens to be one of those areas, cognitively, that I find accurate and acceptable and therefore am not the one to expend time to investigate the 'fix' or the implementation. Do post any results you find though...I'm sure other folks are definitely interested. Certainly swapping one of the prop rotation directions is the fastest way to lose the MU2 roll...but perhaps you're only seeking to minimize it a bit. If you can't get it to work though.....then there is another tweak you can do and ironically, its what we do in the real MU2. Use aileron trim TomK