[Ed Wright]

We did use high heat aluminum paint on steel gaskets for years with no issues.

I have found many head & block mills around here don't cut a smooth enough finish. That is in the set up of the little cutter bits in the wheel. A slick finish seals steel head gaskets better. Ask me how I know. LOL

I generally use K&W Copper Coat when I reuse a Cometic gasket. Not the first time. Not trying to tell anybody how to do things, just sharing what has worked for me.