This stick is a twist rudder stick. The rudder inputs for this stick are actullay broken in AH2. This problem is not evident in AH1 or in the windows calibration screens.
It can best be seen in the Joystick settings input display screen. The problem is that you cannot hold partial input.
You can watch the rudder indicator in that display screen. When you attempt to hold partial rudder, at say aprox. 25%, you will see that after a moment, (how long depends on your dampening), the rudder will migrate to full deflection without any input from you.
This is nothing that can be corrected by adjusting sliders. The rudder input for this joystick is broken.