Get rid of the AV-Gas. It will give false plug readings. Av-Gas is designed to run in high altitudes and has different additives and properties than pump gas or race fuel. If you have NOT bumped the compression, then use 93 pump gas. I use Unocal 110 on my hot rod stuff. If your carb was sucking air from the folded boot then it won't matter how big of a main you put in, it will still run lean. Good luck...
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