Ok on to the next step with this new engine! Cleaned the valve train oil has been changed the fuel pump is working there’s spark but no start! This engine has a carter w-1 carburetor on it I have a Rochester on the original engine. It is my understanding that the w-1 isn’t the best carb ! Is that correct? I think in in need of a carb rebuild kit so what carb should I be rebuilding? The Rochester or the carter.