[Bruce Edwards]

Sorry but I do not get it. The "Power" band comes in when the vacuum drops low enough for the "Power" valve to open. Have you run the engine with a exhaust analyzer hooked up so you can get a true reading of what is going on? I used this same set up on a 427 Medium Riser Homan and Moody engine we did for a Cobra kit we did years ago and had no trouble with the stock carbs out of the box. Never had to change the jets or do to much in the way of adjustments.