Hi All, I had the Quadrajet rebuild. Car starts fine, hot or cold. Idles great. Runs great, but when I stomp on it,( or even a heavy foot) it accelerates hard and long. But, when I let off the pedal, it sputters and stumbles until I restart the car. Visually, the secondaries don't appear to be stuck or sticking. 455 with headers and a cam. Any ideas?