Proform 850 dialing it in closer

But is that AFR reflecting coming off pump shot and idle circuits?
Is the load, or lack of, while spinning tires affecting the combustion? yes. Is that in turn effecting the leftover oxygen or felecting an actual change in AFR?
That's hard to know about the early part of the first gear.

IDK. Guess I'd go 1 jet size all the way around, or maybe two jet sizes if just doing one end.
I mean there's nothing to suggest the overall mixture is far off is there?