If I remember correctly, i did see 2 cork gaskets doubled up under the valve covers.
The engine has a high lift cam, with Jesel rockers (apparently BIG $$$) and ran beautifully, so I hope that's what it is, just a piece of cork, I'll change to a different style VC gasket, the motor goes back together, and we all live happily ever after, just like in the movie.
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