Originally Posted by bigmatt

Holy crap If it were mine with one gallon I would do .03/.02/.01 for another 1/2 gallon then 1-.02/2-.01 for .04+.03 built in for .07 total. I don't like the aluminum shim. Had one leak on me when I first got into nitro. also if I'm correct copper will keep it's seal better. When I started racing dirt bikes back in the mid/later 70's a trick with the copper head gasket was to bake it in the oven then install.