Originally Posted by larryboy
If you're careful you might be able to save the gasket.
A tip I learned a while ago is when you're putting on a new gasket, coat one side of the gasket with a light film of grease. Just a light apply, not much. That will be enough to prevent it from sticking to the metal when you remove the cover again someday but won't hinder it sealing.
I tend to grease the side than goes toward the engine, not the case. This is because it's easier to scrape the gasket off a case that you can take to the bench or whatever than the engine itself.