On Mon, 06 Aug 2007 07:45:01 -0700, AlanC
mused:

On Aug 6, 2:03 pm, "Dieseldes" wrote:

Anyone have any ideas how to get it out, preferably without replacing the
tank as well? (2)


Have you emptied it? Having it full of water can help prevent it from
distorting while trying to undo the blanking plug. You could also try
heating the blanking plug to free it up.

You want to heat the metal around the plug, if you just heat the plug
it will expand in the whole and be even more stuck.
--
Regards,
Stuart.