I fought the hard start when engine was HOT years ago when I first got my car(65 GTO). It got a little worse when I went with 2 1/2" exhaust. A mini starter cured the problem. I later put phenolic spacers under all three carbs, but 1/4" ones. No problem with ram air pan. I do not think it will cure hot start problem , but just a guess. Easy enough to try however.
Dave
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