[BILL WILLIAMSON]

Wherever or whatever is causing these problems, to me, seems to be related to underhood temps. I wonder if it is either more or less prevalent with different fan configurations??? Studying the carb top filter chamber, I strongly believe that boiling gas in there can't escape through the needle & seat & backs up into the gas line causing no fuel flow. If this could be he root cause, the next challenge would be to keep that chamber area cooler.
Before OSHA & all these GREEN PEOPLE, Ol'Bill might have imagined, "If someone makes a self adhering asbestos putty-like goop, I'll layer it on that area to keep it cool & paint it flat black!" Wish I could talk to Chief, I'll bet you this is not just a "modern day" problem!! Bill W.