Here's a grade school question for you. How do you know which point on the distributor cap corresponds to #1? Is the position of #1 based on the location of the vacuum advance or the tab located near it? And do the tabs advance CW or CCW?
You would have to bump the engine to TDC on the compression stroke of the #1 cylinder and see which post on the cap the rotor points to. It's not necessarily related to anything else external.
