I have these new for $30 (in stock).  They tend to get brittle with age and
break.  Let me know.  I also sell a kit to redo the hoses and seals on the
tank as well when it is dropped.  It is around $56 (not in the office yet
today) and includes the plastic x-over pipe.

PS The guys that I buy these from (local VW Dealer) can't believe how many of
them I sell.  I would say they are all bad or going bad.  My '91 Carat had
this problem shortly after I bought it and this is the newest van out there.

Thanks,
Ken Wilford
Van-Again
John 3:16
http://www.vanagain.com
Office: (856)-765-1583
Fax: (856)-327-2242