Thats right,also if the primary throttle is open to far @ idle that will cause a rich mixture,hence no response from ya mixture screws.Your power valve is ever so close but I think the 5.5 would be better.Also like said 31 pump nozzle is very good.U likely have a 25 in there now? When these Holleys are set up right there great.PS you have a good vacuum reading at idle for that cam.
