Some things never change- - - -I can remember Dad changing air corrector jets on a BIG Zenith 2-barrel he used on an alcohol-fueled Ford flathead back in the early 1950's to adjust for track conditions and humidity. The carb was originally for a big Mack truck 6 cylinder, but it would flow more volume than the 3 Stromberg 97's his competitors were running. The corrector jet works in reverse to fuel jets- - - -bigger diameter is leaner.

He was race-tuning with a chassis dyno one of his sponsors, a trucking company, had in their shop.
Jerry

"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln
Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt!
There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway
Love your enemies and drive 'em nuts!