i just got a 1978 puch maxi and it tops out around 20mph right now. the guy i got it from said he put a #60 main jet on the carb because he didn't have a better size. he said i should find a #50 to #54 to help the top end speed out. is this a good solution?
i'm also considering getting a 15mm carburetor because the stock one is 14mm, correct?