All good suggestions. The Yo might have an electric. You also need to remember that while gas is worse than when the Yo was new, it is LIGHTYEARS from what it was in 1970.

Try an insulator for the carb. That will help some. A Carter will be much worse than a Holley for fuel burn off in case you are wondering.

A 750 is in no way "overcarbing" a 383. Not by a long shot. Even on a stock engine. That's a time honored method of waking one up, I know cause I have done that.

You could solve all of this by just keeping a gas can handy and pouring some down the carb right after you check the oil. An electric pump would help, but isn't necessary.