Ok so I posted awhile back with a piston all tore up i have rebuilt the carbs which seemed great for being original I'll be getting cylinders back next week now , I could not find any issue with carb running lean as the culprit , how do I tell gas flow per cylinders from carb ??? Do I just put everything back together fire it up and take head off and check ?? Also is there a specific piston ring location of the slit ??