Home-made gasket for 2-stroke motor

I am rebuilding a 1988 Evinrude Junior 2hp outboard motor. I have cut
myself a paper gasket to go between the leg and the upper casing. The
gasket needs to be gas-tight for hot exhaust gasses. There are also a
couple of small holes in the gasket for cooling water channels.

The gasket paper I used is 0.6mm thick. My question is: should I smear
anything on the gasket before reasseembly? I have some lithium grease.
I also have some blue silicone gasket compound, and some silicone
grease. Which of these is most suitable, if any?

Thank you.

Al Deveron