OK that was weird. I installed USB Overdrive, and on restart lost all function on the Turbo Mouse.

I had to plug in another ADB mouse (which worked) and do a keyboard restart. The ADB mouse worked then :?: (but still not the trackball). I uninstalled USBO, then restarted again. Mouseworks still couldn't detect the Turbo Mouse until another restart. Now I'm back to where I was above - a working Turbo Mouse with default settings.