Warming Plate Gasket

[Mike Maclean <macleans@earthlink.net>]

Before installing my stock exhaust manifold yesterday, I noticed the
gasket under the warming plate was not completely there.  I have not
been able to find a peice of blank
asbestos material to make another gasket from.  I don't even know where
you would find a gasket for the warming plate on a stock Bugeye exhaust
manifold.  Is there any other gasket material I can make this from?
Mike MacLean-60 Sprite