Can't Assign Mouse to Fly Helicopters

[AJustAFire 0]

Hello everyone! I'm trying to set up my mouse to control the cyclic for flying helicopters but I am having some trouble. I want "mouse up" to be cyclic forward and so on, but when I drag and drop "mouse up" I keep getting a red error that reads "Duplicate: Cyclic aft". I have cleared out ALL, I repeat ALL of the controls and I keep getting this error. Whatever I assign with the mouse I get a duplicate error. I have even gone into all of the other categories and cleared out ALL of the mouse controls (even ground vehicles, infantry, view)  to try and fix this error and nothing works. How do I fly helicopters in this game with the mouse? I kinda want my money back at this point.