That sounds like what my tail would do with the CSM gyro. What you said about adjusting the subtrim all the way to the left now makes perfect sense. I hadn't realized the difference between setting up a vaiable pitch tail rotor compared to how a motor driven tail works. I believe that a variable pitch tail has both positive and negative pitch, while the motor driven one adjusts from zero rpm to max rpm all in the same direction. I will reinstall all of my separates with this new found hope. If all goes well, then I will beable to program my Blade just like I have always wanted. How does your revo mixing do? Did you do any ACC mixing? Does your tail rotate any when you throttle up or down fast?