You and i had a phone conversation as you were working on your buddies car correct? If anyone needs a new, pace purchased, pro billet distributor pre locked I will do it for $50. tsp or msd. If that helps anyone else out.
There are several videos out on the rotor phasing and what it does. Essentially your are verifying that crank TDC is in fact matched to the distributors shaft/terminal pole position. Engines are VERY commonly 2-6 degrees off.
So...at low load cruise, the fitech throws a load of timing at the engine for economy. If its off another 6 degrees, you are on the verge of spark jump, or detonating. If that helps the reasoning