John, don't be apologetic for correcting me. That's what this forum is all about, and I don't operate on ego. The main thing is to get a question answered correctly!
With initial timing set per specs, and no VA, most engines will run pretty doggy at lower RPM. That's the reason I was throwing VA into the formula. Sorry, that was for simplification, and not mathematically correct. So, if the VA is eliminated (still not sure why that's the case here), more initial advance would be beneficial.
Of course, you're right about a positive stop which limits total advance. You're also right that some distributors may not have all the advance in by about 3000 RPM, but they will be pretty close. Thanks for your constructive corrections!
FWIW, when I installed my Pertronix, it spark-knocked bad upon initial start-up, before I even tried to move the car. I had to reset the timing immediately. I hadn't moved the distributor, just a simple install.
"Get your facts straight first, then you can distort them as much as you wish"!!
1965 Fastback, Sunlit Gold, I6, T-5, Pertronix, CAA AC, SSBC frt discs