before I pulled the origional carb off, it idled low, but ran like crap, so I took it off, and cleaned both of the mating surfaces and installed a rebuilt good carb with no gasket sealer. I already have the carb off so Im not going to reinstall it to check with carb cleaner. This is the third carb, so I pretty sure that its a vaccum leak. I talked with my co-workers down at Napa Auto and they agreed to the vaccum leaks. And Id belive those guys over many others considering how many years of experience they all have.