Need help to reconfigure the y-axis of my joystick to function as a throttle.

I'm using a logitech wingman with wingman software. However the MW overrides the software, apparently.

Is there any way to do this in the game?

Welcome to the Banzai Institute Satyre
Can I ask why would you want to use your Y axis as your throttle? How do you aim up and down with that configured that way?

Joystick: Movement.

Mouse: Torso/aim.

I'm not sure you can use a joystick and a mouse if you are using Mercs patched to MP2 or beyond. If I recall Mektek disabled that to counter the super turn.