I'm seeing something odd with my V22, that I hadn't noticed before. In VTOL mode, the yaw gyro correction seems to be opposite of what I expected. It seems to accelerate the yaw, instead of countering it, which puts mine into an accelerating spin!
To test:
1) Power up the V22 in VTOL mode
2) Keep the motors OFF (no throttle)
3) Verify the yaw inputs on your left stick map to the proper nacelle tilt (ex. left stick left, makes the left nacelle rotate backward, and the right nacelle rotate forward)
3) Release the sticks, and by hand, yaw the plane (twist it) abruptly in one direction, and notice which way the nacelles tilt.
4) Did your nacelles tilt to accelerate the rotation (bad), or counter it (good)?
I eagerly await your results!