So I often need/want to zoom in faster than I can with the scroll wheel. There is the shift key that does just that. However, I don't quite have the keyboard dexterity to mash my rudder controls and the shift key at the same time, as is often required. I don't want to take by hand off the mouse, so I'm kind of stuck. But I had a thought. Is there a way I can attach the zoom function to the middle mouse button (or any other button for that matter)? That would be much easier, and if I want to follow my shells, I have the time to press z for cool visuals, I don't need that function on my mouse. I messed around in the settings, but didn't see anything.