Failing to do exactly that is why I'm here. I've tried btnx, imwheel, udev, and easystroke, and all of them come with a common problem: The remaps work flawlessly until I hold down 2 mouse buttons at once. If I am holding down the right button and then tilt the wheel, it will execute the scrolling instead of what I mapped it to. This makes for a huge problem when trying to use it for gaming. So now I asked if it is possible to change the problem at its core.