Hey gang, recently overhauled my stock keihin carbs for my 1974 cb750k model and somehow misplaced my 4 o-rings and washers for the air/fuel mixture screw (pilot). This is the one with the spring underneath it, then down in the hole are the ring and washer. I can't find the part# or even know where to get them. I've come across all the other kits and ring/washer combos (too big) but, these are smaller than any other carb that I've come across. Anyone who can help with where to get them or *(especially) a part#, man, it would be soooo much help. Thank you, b.