does anyone have knowledge on the right size metering rod jet should be on a carter yf carb? its on my 46 chevy truck 216 6 cyl the carb has 864s on it is this an instance where you try different sizes untill you find the right one? maybe theres a tech manuel that specifies? rebuild kits DO NOT have this jet i guess cause every carb is different maybe match the meter rod? i know i need smaller cause im running rich but dont know what to get thanks for any wisdom on this