Intake gasket opinions

You are running header evacs, but is the other end of the valve covers sealed off or vented?
You won't see much gap the way you are checking that intake unless you put a gasket on the bolted down side, so it moves the intake up away from heads. Properly machined, it will slide down onto both heads without gaskets perfectly, if the bolt holes have enough room to move. I don't think that measurement showed a problem.
Maybe a leakdown test would be a good idea.