Mark,
Try the fuel pressure regulator from Auto Zone. The builder of a Zenith 601 using a Harley engine used one and was able to get his fuel pressure set to 1 1/2 pounds on the dial to keep from flooding his carb which I suspect is similar to yours. The data sheet claims it shuts off when the selected pressure is reached and apparently just passes fuel at or below the desired pressure. I have one inline to my 0-200 and it seems to work well also. It goes for $19.95 Cheap enough to try. Larry Flesner
