Anyone noticed that if you are careless with the Joystick throttle it has a bad effect and causes most of the trim problems?
Make slow increases and decreases with the throttle or you get bad torque effects.
Fast throttle increase = roll + yaw right
Fast throttle decrease = roll +yaw to the left
I think that's normal in a helicopter? Once I learned to be cautious with the throttle and anticipate how much power I'm going to need - I don't even worry about Auto-trim now.
If you have any bad habits from Arma 2 - e.g. slap the throttle on full for take off and cruising you will have bad stability. You only need 25% - 50% power for most situations. 50% - 75% for entering a hover if speed is low and you have some downward velocity.
Probably the same with the keyboard throttle keys?