Deceleration valve leaking?

How about a picture? Some of us are old enough to have worked on carbs during the early 80’s with feedback carbs and solenoids galore. It may help getting our memories jogged as we drink our Metamucil for the day.

Back then, manufactures were scrambling to meet the emissions new guidelines and were throwing everything but the kitchen sink at engines to make them compliant. 2 gas tail pipe testing and crazy fuel tank additives and Native American dance rituals to get your car to pass emissions. Crazy times.