[Blas]

Regarding leaks on valve covers, a little trick I learned is as follows. I am still a big fan of cork gaskets. But if you ever test fit a cork gasket on a valve cover you will see a small “shelf” of cork gasket protruding inside the valve cover lip. This “shelf” tends to trap oil and I feel creates or speeds up the seeping problem. I test fit the cork gasket and mark the edge of the valve cover than cut a few “V” shaped notches in the cork up to the edge of the valve cover for the trapped oil to drain from the “shelf”. I only use RTV silicon on the gasket to valve cover side. Super clean the heads gasket surface than reinstall being careful not to over tighten the bolts. Helps to true the gasket surface on the valve cover too. I like a slightly roughed-up surface on the valve cover gasket surface too.
Blas