Yep, or add another gasket (should use 2 new ones really...)
Uh I have a question do you seem to be lacking power while riding? Could be a blown head gasket, they can be pretty loud, even a exhaust gasket pop could make a loud unusual sound that seems to be something it isn't. If while running you look closely at the head gasket area or exhaust gasket area you can see puffs of gas comming out, you can also usually feel it. Just hover fingers around the gasket areas, you will feel the puffing of the escaping gasses.
Just something to do instead of pulling the head, may actually yield a simple result.