Well between Jeff's comments and the video I think the drilling was the culprit on mine, which was drilled stacked pin under bridge. I think the pin to PAP was just too long (my PAP is 4 5/8 over and 1/16 up).
That identical layout on an old Norm Duke Signature Hammer (lightbulb core with a solid, but weak, reactive shell) gives me plenty of length and a lot of forward roll. And that ball has wonderful carry. I can play up the outside almost all day with it.