Hey. Have you got installer from this post
https://SimHQ.com/forum/ubbthreads....is-out-eech-20th-anniversary#Post4516373not from some other in-process development discussion?
That does not sound normal. It's true that Kiowa has single engine, and in the latest version it's in shadow mode - RPM and torque of #2 engine are same as on #1. Doesn't very realistic but only way to stabilize output torque.
1. You can try to install different DYN files pack (labeled as "1.16.0 dynamics", if you have 1.16.1 dynamics installed).
2. I guess in controls settings you can see that rudder axis centered properly. All other helos are completely fine (first to check is Viper)?
3. In difficulty settings you can find "cross couple" option that you can try to toggle.