Rated 5 out of 5 stars
duzers, you can use about:config to fine tunne the addon. I tuned all of its options entirely in about:config (filter by smoothwheel) to suit my precise needs.
You just have to see first how these options change when you change options in the UI so you know which values mean what and test. After you set it, don't use the UI so it won't mess with your fine tunings.