Here you go, the factory adapter seal version to use the smaller later
filler neck with larger early size tank hole.

http://www.busdepot.com/details.jsp?partnumber=251201139B

Mark

neil n wrote:
> Hi all.
>
> Ok, found the gas leak.
>
>...
> The poor alignment up/down of tank eventually trashed the big donut
> seal. This part locally is $40 so any expert direction would be most
> welcome. I really don't want to do this again!    :)
>
> Thanks,
>
> Neil.
>