Edelbrock part throttle surge help

bigdemo1,
i will get back to you with the metering spring color. I bought the eddy calibration kit and bumped up the rod to the next level of richness for part-throttle/cruise. I will also get back to you about the vacuum i have at idle. Yes, i adjusted the mixture screws to max vacuum and these adjustments had no perceivable effect on my surge problem...