Alistair,
Can you elaborate about the foam square?  I see one of the photos
below shows something like leather behind the opening that was cut in
the box.

Thanks,
Edward

At 06:46 PM 9/25/2011, Alistair Bell wrote:
>I have some pics of the city water mod when I took the port out of
>my '82 westy.
>
>http://shufti.wordpress.com/2010/08/10/westy-city-water-port-fan-mod/
>
>I cut a square of closed cell foam which fits in the port tightly
>and acts both as a gasket when flap is down, and as a prop when flap
>is open and fan running. I never used it while driving.
>
>alistair