Well well well, I hope you are still about matey because after 23 years of searching, guess what I've just ID'd after countless hours listening to thousands of releases on discogs, numerous attempts at contacting the judge and hundreds of late night Google searches!! Track 6 is no longer unknown!!! After searching every release on discogs from 1998-2001 containing the words jack, groove or any other related search terms I finally found it, no video on discogs or YouTube so another search took me to a Japanese vinyl website that had copies uploaded with an MP3 clip!! I'll wait for my copies to arrive to confirm it is actually what it is then I'll post the ID!!