[snbush67]

Originally Posted by 1QuickS

You might have too much air passing by your butterflies due to wear and can't adjust them closed. Check out my web site (Performance Oriented: repair, restoration and modification of Weber carburetors) for info regarding wear items on the Webers on the Technical page. Butterflies edge wear due to uncontrolled axial throttle shaft movement (check out the picture showing this.)

Wow! That site is a keeper, thanks for posting this Great Resource.