Oukej, the thing is, there should not be collective raise AND collective lower. As an analogue control, it should just be collective. Think of a real heli, they dont have a seperate collective stick to lower and one to raise. Collective control should be analogue from 0% - 100% none of this + -. I also tried mapping the joystick as you said but it doesn't actually fix the problem at all. Play DCS with the UH1 pack. THAT is how helicopter controls should feel.

Does it mean it's something you are going to try to fix?