Wow...works great now. Now if one of my passengers reflexively twists that knob to change the volume, they'll just adjust the info or the visual. The reason I didn't want to use PopUp0 to switch visuals was that it required a minimum of two knob presses; even though the PopUp's position is persistent, I'd still have to push the knob once to bring up "Visual+" and a second time to change the visual. I think I'll just stay away from Knob= lines in the config.ini from now on.

Do you get any sleep?