Is that using an Atari 2600 rotary or an optical encoder? I built one with the 2600 rotary and wasn't too happy with the results on Tempest 2000 some years ago.
Is it really necessary to bump an ebay auction that many times? 1/3 of your posts here have just been bumps to this thread (heh, sorry, two bumps and one ba-bump ). How about an answer to the question about the spinner?