I've had the same problem trying to sync with the homemade balancer. Getting them matched at one idle speed yeilds huge variations at other idle speeds or throttle positions.
Also, adjusting the idle mixture screws seemed to have almost no effect on idle speed.
Could these be symptomatic of a vacuum leak?
'05 SM, Bubs, Freak, 45/TBS/155, NGK Iridiums, Nology Wires & Coils, Progressive 440's & Fork Springs
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