Headgaskets Aluminum Heads

I use an inch pound on the tin stuff with cork gaskets for obvious reasons as well. The cork can usually do with a re-torque down the track.
Cometics come with a coating already on them, so it's beyond me why you would coat them.
Back in the day some production engines required re-torquing at various service intervals, but the "monotorque" style gasket put an end to that.
It's pretty obvious by this thread that people don't understand why differnt styles of gaskets are made and what thier aplications are designed for, also how to use them correctly.
Well it may be beyond you but in the real world where you have multiple high end engine builders doing engines of significant power and have had issues with the Cometics and so they all now copper coat and no more issues.....take it however you want.