Denny, from the content of your posts, I know you approach such things in a detailed engineering sort of way, so this comment should be taken only as an anecdote. I do not claim any special knowledge but after suffering the "drip" in my '51 3100 (216) for some time with more than one Rochester B, I came across a Carter YF 787SA carburator at the ATHS show in Colorado Springs. After reading many posts, especially Carbkings, I decided to take the plunge. This carb was in the box, NOS. I figured it would have to be rebuilt but the seller insisted that all I had to do was put a few drops of Marvel Mystery Oil to soften up the leather accelerator plunger (why is it that every one uses Marvel Mystery Oil for odd things... I was told to use it as a substitute for Bendix cylinder oil for the Hydrovac on my Diamond T). Anyway, I followed his directions, bolted it on (it is a direct swap with no modifications of lines or cables). The truck fired right up, has never run better and doesn't leak a drop. My wife always complained that that whenever I drove that truck I always smelled like gasoline, but no more!! It has been only 3 weeks, but I am a convert.
