when i turn the mixture screws all the way in on my 750 dp the idle actually increases..this means the powervalve is blown,right?i think im about to ditch the powervalve setup and go with a plug anyways and just jet up....

the car runs great,super responsive just cant get it to quit smoking..

How high is the idle? If the idle is too high or you need to open the throttle blades too much to get a good idle (common with big cams and low stall) you will be almost out of the idle circuit and in to the main circuit. I would pull the carb and look at the primary throttle blades, you should only beable to see just under a 1/4 of the idle feed slots with the throttle closed.

If you had a bad power valve the car would run like chit and be belching black smoke, if it ran at all.

im guessing i might need to drill the holes in the butterflies.any ideas excactly what size?

this is a 327 255/266 @ .50 105 LSA....

I start small and work my way up, if you go too big then the only way to fix them is to replace the throttle plates.