If I am reading you right and your saying that your primary throttle blades are barely open, then that is a good part of your issue.
This means you must be idling more off of the secondary’s then the primary’s.
Can you pull the carb off and post up a picture of how your primary throttle blades look in relation to the transfer slots in the base plate?
PS.
Vacuum is stated in inch’s, not lbs.
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