Pertronix II users

"Starts" is a broad term. A video of the engine (throttle side with air cleaner off) cold, initial starting could be helpful. Fuel pressure/level keeping up? Mix screws checked for initial run setting before adjusting? Electric choke not opening quick enough/at all (rotate to hold full open for now)? Vac ports capped? Year-old ethanol and open tank vent water mix in the bottom of the tank (try pulling fresh from a can)?