One thing i recomend you to do is take them apart and check them out ! on my outboard carbs bodys they had take of to mutch on the metering block surface so the the ventilation hole that runs down
to the bowl from the top of the body would have leakt out fuel so adress that if the ones you find are the same but other then that these carbs are great and the anular boosters were a good thing to.

The fuel line that came whit the carbs whas nothing i whas impesst about so to avoid a fire in the engine bay i whent whit real banjo´s !

Just send me a email if you have more you whant to know !