Well, I guess I'll bow to your obviously superior knowledge.
But I will still point out that my Owners Manual (1980, second edition) specifically states that "The carburetor is an all-position, diaphragm type having a factory-calibrated, high-speed mixture system for proper high speed performance." Without bothering to type in the next two paragraphs, I'll simply note that it says that there are only two adjustments - the "idle speed screw" and the "idle mixture adjustments". My personal experience with the Super 2 is based on just my own saw and this manual, so I am currently un-informed on whatever else they might have made after I bought the saw. For years I thought that Homelite only made junky cheap home-owner class saws, so I never paid much attention to it - only recently have I come to realize what a gem it is.
I know there are thousands of other saws that I could buy, but I love the one I have. I guess I'll keep my eye out for a replacement carburetor if such a thing exists for this model.