lol your english is a lot better than my german
I do FSX every now and then. Yeah a flight sim with the properties of ArmA would blow everything else out the water!
It would appear you cant change the Z axis. I havnt tried it but i seem to remember this topic being raised before and things done to change it. That was back in the ofp days and a good 2 yeards ago, at least. If you find something id be impressed. Maybe posting up on the offical forums (
HERE).
No the rudder movement is reduced in ArmA when using the X and C (rudder keys) at speed. To get a good turn in flight drag away from you rapidly with the mouse (lol) or even tighter hit the left arrow key to flip the bird on its side and then the back arrow to pull hard in the turn. The second option though almost always loses you lots of height, flips you backwards and kills you xD
happy hunting
Carver