[VAC] Replacement fresh tanks?

[david@xxxxxxxxxxxxx (David Josephson)]

What is the preferred source for replacement fresh water tanks
for Airstreams? I have heat-welded the crack in mine (at the
filler neck, where the previous owner must have run into it
with something) but there is another crack on top where I 
can't reach it, and I don't have a lot of confidence that the
patch will hold. We'll see ... but in the meantime, I've seen
references to replacement black water tanks but this is made
in an odd shape to fit in the center section, I would not 
like to modify that. 

The combination of a small heat gun (as used for heat shrinkable
tubing), some scraps of milk jug as filler material, and a 
temperature controlled soldering iron with a broad tip at 600F
worked well enough to get the crack in the side stitched back up. 
I was cautioned to work slowly and not get anything too hot -- 
I rapidly saw that this could be a real nightmare. Filling the 
tank with water allowed me to reheat the patch a little more
aggressively and smooth over the outside parts (as the inside of
the patch stayed cool).

In general the milky plastic turns glossy or looks like it's
sweating; this is just the point where you can push the plastic 
around and get it to stick to itself.

-- 
David Josephson / Santa Cruz CA