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Message: [QUOTE="yota_fanatic, post: 1219959, member: 79349"] no, it think stock is a 48 or somewhere around there. It runs really good, just not if you hold it around 1/4 throttle. It still pulls good on bottom, just not crisp & clean. I know a 40 pilot seams really lean, but it's no where lean. I just checked the floats, cleaned the carb out, and moved the clip to 1st position o N3WK needle. Does anybody know if a N3WK is a leaner than a N8RH? Bill's pipe recommands using a N3WK needle? It also has a pro circuit pipe, which I hear is the hardest pipe to jet right? [/QUOTE]