Welcome to CHR! I agree with Tech, it sounds like you're boiling the fuel out of the bowls. I like that heat shield that he linked to, as it shields from radiant heat from the intake as well as the heat conducted through the base, but if you simply cannot abide that "look" covering so much area you might consider a thick spacer as a starting point, and see if that does it. They come in a bunch of materials, from wood fiber composites to phenolic, but you don't want the aluminum model. Summit has a ton of them, based on the bore of the carb - http://www.summitracing.com/search/p...9%2B4294949621