Do you have them boost refed? have you ever put a vacuum gauge on the base plate of the carbs to see how much vac your blower is pulling? I had a one with teflon strips and it pulled a ton of vac at idle and went up from there, I ended up plugging the power valves and jetted up, when you get to drive it get a long piece of vac hose and hook up a gauge and drive it to figure out where your vacuum map is and if you can use pv's. Just my two cents for what it is worth.