I need to play around with this combo some more before I make that big of a change. Right now, it runs really smooth with a slight stumble at part throttle if I slam the pedal down. Does fine if I do it gradually. When it was running a bunch of advance, there was no stumble. Tomorrow Im going to check the position of the link at the accelerator pump and re-check my plugs. Before I got the timing and idle down to where it is now (about 840rpm at 13 btdc with 19 inches vacuum) the plugs were crossing the fence from tan to white-ish. Will too much carb cause lean running?