well, if that "working" part becomes less an issue.. I have a pair of carbs from my 72 CB350k4 that are mostly intact. The diaphragm and jet retaining clip are missing on one, and i can't seem to find proper gaskets for em. they ran on my bike a couple summers ago... for a week... with some permatex grey gasket maker at hand. on the bright side, i'll sell em cheap. message me with an offer.