Hi pacmule,
Is this the track your looking for??? Numb - The Perfecto Mix (6:42) Numb Promo Single
The Numb Promo Single is very rare.. from what I have found there are very few in it's existence. It was released as a single from Zooropa but was only ever available to buy as a VHS video single, hence why there are very few CD copys of it in existence.
You can find the VHS available on amazon.com and your in luck because there is an auction on ebay for this very promo...
Good Luck to you in your search,
it was intresting for me and my research.