Ok rapid Robert, I got a hole drilled in an old cap and put it on and checked the rotor phase with and without the vacuum advance and the rotor phase is off with and without the vacuum advance, it's not as far off without the vacuum advance but it's still not directly under the cap tower.
I took a black marker and marked where the cap terminal is and where the rotor is with just mechanical advance no vacuum advance and where the rotor is with vacuum advance.
The rotor is behind, it needs to come forward more to be under the cap terminal.
I took a picture of the cap with the marked locations of where the rotor is.
But I can't figure out how to post the picture on this page.
Idk what a URL is and how to get one.