http://www.thedubdoctor.com/parts_site/http://www.partsplaceinc.com
Try shooting this guy an emailhttp://www.metalmanparts.com/Dunno if he can help or not.. Just stumbled across him, and he's been pretty helpful so far...
This post got me thinking that they couldn't be that hard to get.. The few places that had listings, didn't have them in stock, and didn't know when they would.... So out of curiosity I asked my local parts guru about them.. A few phone calls and he managed to locate someone whom has 3 sets of 1mm over 1.6TD rings... However, they are Topline rings.. And I can't say much nice about them from my experience...
He stocks Grant, which produces OEM quality parts and are approved by Volkswagen.