HHmmm.....you maybe right. Drill a hole for your distributor and re-install your intake backwards. Then, you'll get the reading you thought was supposed to give as stated. I see where you're going with this and as we all started in this feild, that seems to be normal. I gave the layman's terms for theory and why the people you buy gaskets from produced the items the way they did. If I was smarter than they are, I'd be making their millions. Too many years of them trying to stay competitive in their field has created what you buy from them. They did the leg work and I don't always second guess why they did it. It's their theory.