Quote:
Originally Posted by 1QuickS
Smaller air correctors will enrich the top end.
Idle richness may be idle jets too large or throttle plates too far open thusly exposing first hole in progression circuit. Throttle plates should be about 1/2 turn open from fully closed and then use idle air corrector screws to get idle speed you want plus balance individual flows out. If you must open throttle plates to get enough air for idling with the result of exposing the first progression hole (remove carb to visually inspect for this) you can get more air at idle by drilling a small hole into the throttle plate (1mm dia, 4mm from the edge, opposite from the progression ports.)
If idle jets are reduced with a resulting lean transition you can decrease size of idle air bleeds to help enrich the top end of progression or select a different emulsion tube or increase fuel level in float bowls...a little to help activate mains earlier.
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Excellent advice, Thank you very much Paul.