"Today I tested this three times and found 12.6/12.6, 12.6/12.4,& another 12.6/12.4. I have hit the 12.5 mark!! The car felt strong and I am happy with this."

Excellent! Were you able to observe the AFR over a range of RPM? Notice any difference between the low end of the range and the top?

I see you list .071 PCVRs; did you purchase those or make them?

I bumped up my main jets from 71 to 72, and my light throttle stab AFR is now much better, so at least that is one improvement. However, my WOT is still way over rich (low 11s) and I tried .031 and .033 HSABs. Given that .033 HSAB is factory I am thinking I was wrong to assume that my over rich mixture was due to using the very small HSABs. Something else appears to be going on. I plan on going back to my .061 PCVRs and see what happens. Unfortunately rain today so it will need to wait for another day.