Okay,... lets say,.. Arkansas, nearly flat, nearly sea level, (less than 2000ft)... with a slightly open muffler,... (open the airflow to match, if it hasn't been done already)... k/n filter, or oiled foam.
#152.5, or #155 main jet, #55 pilot... 2/3 to 1/2 thick needle jet spacer...
Unless you are radically different than that (see 6's, ie, #160+main/#60+pilot)... look for a leaky petcock (very common),... or stuck float, or stuck needle slide (fairly common)....
...or,... just learn to love flames.... (shoot!,.. some people would pay for those!).... big singles, are poppy, and sputtery,.... maybe a little flamey?...
Lets just say primitive,... Cool!...
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