Sheet I wish it was a 38, its a 32/36 its got a header thats about it, 200 feet above sea level. Still got jet valves if that makes any difference. It has been pinging alot lately too. Is thia because of the jet valve or maybe cause its running lean? It doesnt do anything if I retard the timing, I have a weber so it should stop the flow to the jet valves? Thanks again