[Ed in Maine]

All of these carburetors will perform satisfactorily if they are clean and the jets are sized properly. However, the materials used in the construction of the Zenith are superior to the others and the Zenith is well documented. All of the jet flow data for the Zenith is published. I only rebuild Zenith because of this. The castings for the others are made of soft pot metal and the threads for jets and drain plugs can be worn causing leaks. Ed