Helicopter Default Params

Good luck with using ‘Extended Tuning’, it will ‘correct’ your input to multicopter default limits, use Full Parameters List/Tree.
Seldom mentioned, but set ATC_ACCEL_R_MAX=0, ATC_ACCEL_P_MAX=0, ATC_ACCEL_Y_MAX=0
and be VERY careful using RATE…_D parameters.