Set timing at 6 deg BTDC with the vac advance disconnected and carb port plugged and it starts and runs but it sounds and runs better at 10 degrees BTDC. Pertronix II distributor. 2 bbl 2100 carb. Also, Assuming this el cheapo $28 gauge from Advance Auto is accurate, I'm only getting 15 inches of manifold vacuum at idle no matter how I fiddle with the mixture screws. Most of the vids I've watched on similar setups are getting 20+ inches. Are both OK or should I continue to mess with it?