massive reconfiguration time again.

This makes sense to me. Number one is getting fed off the front of the front carb.

Number eight is getting fed from the rear of the rear carb and if the secondaries don't open at WOT that plug will read a bit leaner than number one. IMO, number eight is what you should be shooting for. That plug is close. You get all eight looking that way, you'll be popping in the tall cotton.

Still a little unsure of intial timing. Looks like it might like more to me.
It would seem like there would be plenty of mixed time as they not only drop into 2 inch risers but also another four in opened punim before they start cutting into their own individual ports of the lower plenum of the tunnel ram and there is a crossover as well.