Double pumper with automatic

If that DP'er is working for you, leave it alone. I've run both vac and DP with both auto and stick cars, and every combo is different. Generally speaking, the DP carbs work best with a manual tranny, but when one works good with an auto, don't mess with it. You could go from being a happy camper with your current combo to a disgruntled, cussin', driver trying to tune in a "better" carb.