[MBZ] head gasket sealer

[Bob DuPuy]

I'm doing another OM603 head today, actually putting a decent 350SDL
head on a 300SDL. In the past I've always put the gasket on dry, but
this time I'm considering using a sealer like Permatex copper spray on
the head side. There are a few pits around water passages and the like
on the replacement head. The ring where the gasket seals the
combustion chamber is clean and smooth. I'm using the latest version
MB gasket. Any opinions on using a sealer?