I have a friend who is a student of Mo's and when I saw one of his Weapons with the "Super Symmetrical Layout" it had the pin about 1" above the midline below the ring with the MB under and kicked a bit away from the thumb with a large weighthole near the MB.
I remember when the Original Apex came out and people were trying to figure out how to calm down the reaction of it because it revved up and flared to early. Ebonite came out with another drilling similar to it with a large weighthole near the MB, and the thumb close to the MB so it gave the effect of "drilling out the MB" of the core (see pic:
http://123bowl.com/ball.asp?ballid=24 ) This was supposed to give it more of a Symmetrical look, and if I remember correctly, the pin to PAP position didn't really matter, just that it had to be within a certain distance above the midline(no more than 2" I think), to allow you enough thumb weight to drill out that large hole on or near the MB.
I think this theory is still relative with this drilling.
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-DP3
Respect the Game