I was going to say something about his stock jets but didn't want to complicate the issue. 120 mains are wayyyy to low. Sticking float, missing parts under the air mixtures screws, the missing collar syndrome all would work to push too much fuel. or rather leak too much fuel. Are both the plugs fouling out? How about the spark plug gaps? Seems to me that with the big bore kit having been put in place that the problem arose then. Didn't he have another thread where he said he checked the slides diaphragms and such? I hate problems like this and hope he gets it sorted out soon. Thus the collar suggestion. Ed's comment about the fuel enricher circuit was not mentioned before. Hum, So Ed, how would know about that one?
