In that case, go to your local post office, and get a couple large Priority Mail boxes. They're free, and the perfect thickness. Cut two strips that are comparable in size to the gaskets, line them up and punch holes for the bolts, then install them like you would the gaskets. Torque down the lower intake, and then pull it back off. The cardboard will show the exact imprint, and you can trim it and use it as a stencil.
Take care,
-Chris
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