According to Steve Pargeter's book jet sizes for the double venturi were idle 10, main 20, comp 18 , cap 19 . As flow rates ( 36") this translates approximately to idle 42-50ml/min, main 155-170ml/min, comp 130-145ml/min ( marginally weaker than later models), cap165-175 ml/min (marginally weaker than later models)