PrBoom - Mouse Binding

[AirborneConstable]

Hi Everyone,
I have Doom for every platform going, from the Megadrive to the 3DO.

I recently bought Mac to make use of my WAD files. I PrBoom works perfectly and I am using the Apple mouse, I want to use the keyboard for moving and mouse for turning, but the mouse currently is bound to the forwards and backwards movement, causing me to move when I may just want to turn around.

I have tried everything to remove the mouse from certain keybindings such as forward, but I can't do it. I've tried deleting the config setting etc. Can anyone help?

Thanks
Dan

[Archi]

Change vertical sensitivity to zero.