On His Lady Vulcan
Join Date: Apr 2008
Location: Washington State
I believe the air screws affect low and mid range. It seems to me that with a completely stock intake and exhaust system that your issue shouldnt be with a stock needle. Have you check to see if you happen to have a tear in your diaphragm or coaster enricher?
EDIT: 86 above has got a good point there, I'd check that as well, as for a carb sync, build yourself a manometer and give that a shot as well.
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Last edited by wkrizan; 05-11-2010 at 06:05 PM.