Okay, so I'll plug the upper vacuum port on the carb and run the vacuum advance on the lower one.

Hooking the vacuum gauge to this port will definitely help me in fine tuning the idle mixture screws as I couldn't get any change at all on the upper port - but I understand now why that is so.

I'll also find the rpm where the mechanical is all in and the amount of mechanical advance.

If I am understanding y'all correctly, it is the initial and mechanical timing combined that should be about 36 degrees?

Might take me a couple of days to get this done since my schedule is packed with necessary work related things.

Thanks for taking the time to educate me.