[KTL]

I got the initial impression the heat range was way off. One notch on the heat range doesn't seem that bad to me. My understanding with carbs on an engine used for racing is that you try to use as cold a plug as possible to just avoid fouling. That can sometimes be pesky because if you don't get the engine up to temp & running at higher rpms quickly, fouling can happen quite easily? Like if you let it hang around idle too much.