Yes, I got the '67 FSM to see how I'm supposed to tune the hot idle speed with the air screws, since there are no hot-idle screws on the throttle levers. The FSM read: "back them out two turns and adjust the mixture screws for best idle". Somehow I was expecting something more complicated. It's idling over 1000 rpm and spec is 750, so- close the air screw some? Anywho it's running too lean.