Great, great work dude!
watching the airplane model pic I got a question: are you trying to use IL-2 for your tests?
If yes or if you will to try it please, check if you find the "longitudinal accelleration" in the IL-2 plug-in.
I searched it but nothing and it's really sad!
Since now I can't to simulate the "on the ground" accelleration and decelleration of the take-off and landing.
Flight simulator X plug-in can simulate it and I am really sad to see that a really good simulator as IL-2 can't have the same.
Again, great work! I love to see 6 dof