when purchasing jets to tune the carb, how does the numbers match up with the sizing ie....the larger number means leaner or richer? Does this apply to the main and pilot?
larger # = larger amount of fuel on both the main and pilot
however a larger # on the needle = larger needle therefore less fuel for ex. i leaned my needle by going from a 6bhy38-74 as opposed to a -73 leaned the main from a 420 to 400 and the pilot from a 32.5 to a 30.