I'm sort of at odds here. I have tried the thicker head gasket trick to get out of the detonation zone but I keep hearing about tightening up the quench to achieve the same thing. I wish I had a Head gasket sponsor so I could try both!
The .027 Cometics still only get me to .044. for quench. I don't know of any other gaskets any thinner that work with aluminum heads. The .020 steel shim aren't supposed to be used with aluminum heads from what I have heard.