5 quick operation and Maintenance Qs

Yeah 48 is TOO high for mechanical advance. You should be hearing a bit of pre ignition under WOT. Mine likes 28 with regular unleaded. See how much more you get at idle with the vacuum advance connected to the PCV vacuum port. This will give you full vacuum advance so you can see how many degrees it adds. It looks like you only got 6 degrees? Does the can have a hex shape where the vacuum port is? if so it is adjustable.