Interesting...looks like the 90-94 gasket blocks all those portals like the one you have already. Wonder why they're different. Maybe someone can enlighten. I looked around and many sites showed three different gaskets: 1g 90, 1g 90-94 (or 93?), and 2g. But it looks like both 1g's are interchangeable except for perhaps the thickness, because they're both blocking everything.