People take me the wrong way in person.......probably more so in text.
I wasn't saying that to anybody, in particular. I know "race weight?"
is one of the first questions I'd have asked. I'm a number cruncher too.

The car/engine exceeded my own expectations. (A RARITY!) Believe it or
not, this engine was assembled from my pile of SB parts that "should"
work without spending any more money to finish. It veered from my original
plan, because it was going to cost more to do it that way.

I agree with the problem in the last half of the track. After reviewing my
log book, pertaining to weather and jet changes, it appears I may have a
carburetor/fuel delivery issue. I think there is more in it, currently.
Fall air should bring better times. My 9.9928 pass was at a density
altitude of 3113' 78.6º 57% humidity 29.01" hg

It's all good.