It's optimistic at best to do the job with the tank in on a Westfalia,
and downright insanity to attempt it on a Carat with the lower
springs. I spent a whole day on the job trying to figure out what I
could do easily and eventually found if easiest to drain and pull the
tank completely, which also helped to confirm that fuel was leaking
from the grommets, not the sender nor a previously applied patch.
Peace of mind knowing I was fixing the actual problem was worth it.
Including the kit, extra fuel line, filter, and miscellaneous stuff
like Vaseline, I probably spent $150. Apparently this is a $500 job to
a mechanic (4 hours plus parts).

There are tons of threads in the list archives  about the procedure
and differences in the vendor kits Including several threads last
month.

Best of luck,
Peter

On Wednesday, June 9, 2010, Loren Busch <starwagen@gmail.com> wrote:
>  RE: Gas leaks on fillup
> That's a common problem.  There is a complex of hoses and plastic fittings
> plus some grommets in the top of the tank going to two overflow bottles that
> sit just above the wheel wells.  The hose and grommets dry out and
> crack/leak.  Most of the online vendors have repair kits.  IF you know what
> is where and what you are doing those lines can be replaced with the tank in
> place and IF you have small. nimble hands.  Otherwise the tank needs to be
> dropped to do the job.
>