Please excuse this Mazda query not being Miata-specific, but I've come up dry with both Google's web search and its Usenet archive; this is the only Mazda group I could find, and searching my server's retention of it, I see nothing relevant here, either.
Needed: a knob for a '03 Tribute six-CD changer. The dealership says that they don't do knobs and want to sell a whole radio. You betcha they do.
Does anybody have a lead on a source for such a five-cent Mazda item that will sell for five dollars, to avoid the need of a five-hundred-dollar radio? :)