Spark Plug Advice Needed

Well AJ I pulled the carb and the transfer slot was a perfect square so no adjustment was needed.
I set the idle screws to the highest rpm and it was at 650 in drive. They were screwed out 1 3/4 turns same as before.
I backed off the timing a bit to get the 750 in park number and connected to port vacuum.
Vacuum reading is 18 inches.
I'll drive it around tonight and see if I can feel any difference.
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Dynomite!
But if the mixture screws are only 1.75T open, then you still have the option of trading away some transfer fuel to get some more idle mixture. It's an option. How she runs at cruising speed with just 1.75Turns out, will determine what to do next.