Functions great. Only troublesome aspect for me is that if I toggle the extension to 'disabled' in the toolbar icon, it will forget this choice and start 'enabled' the next time I quit and launch Firefox.

I only use the extension on a minority of my systems where my mouse driver has bad scroll configurability, so I'd much rather have to toggle on there than toggle off the majority of times I start the browser.

While I'm being critical of an extension which someone has made and released to absolutely no cost to me, the ability to explicitly type in values in the configuration screen (vs only being able to adjust the sliders) would be a plus as well, in my eyes.