That's the thing, when I open the config window, it shows the mapping fine. As I said, it looses its mapping 99% of the time in sketch only, which is unnerving.
But it's still quite useful. After a few months of use, I'm now able to go select a tool on the toolbar with the mouse at the same time as I rotate the model's view to where I need it to be. Which, according to an opinion on Amazon.com criticizing the SpaceNavigator, "is impossible". LOL.