Carb tuning, larger accelerator pump nozzle?
Rat,
So now the story changes AGAIN between post 77 & 80. And your calling me a dumb ***.....
And as far as 'haven't tuned anything' , I was fitting twin 35 mm Dellortos to my Knuckle Head Harley in 1967. Probably before you were born.
You don't know what you are taking about; typical of those with little actual knowledge, start name calling when they get caught out because that is the best they have got...