What really pisses me off is Edelbrock's head in the sand attitude. All of the time I spent talking to Edelbrock, the many hours spent trying to tune this problem out of Edelbrock carbs, Do you think Edelbrock doesn't know how to deal with this problem? I'd bet they do and they will not share the fix with their own customers. Their final word to me from Edelbrock was that it was the dyno operator's fault. How many times have you seen an engine on the dyno being tuned for off idle performance.?