Advice on fitting the Silicone Valve Chest Cover

[DaveT]

What’s the best way to fit the new silicone valve chest gaskets?
 
With the cork gasket you had to chamfer the gasket to fit into the cover then cement it in place before sealing it when fitting.
 
Do I fit the silicone gasket dry or greased or sealed??
 
Any advice is more than welcome.

Thanks