Mine Liberator checked in with a 2" pin.
I went with a basic label drill...pin just right of ring finger(3.75" from PAP), cg towards grip grip center. No weight hole required. This ball is quite a bit stronger than I imagined, yet it is silky smooth. Carry is very good. I tried it out on our usual THS...medium volume, dry outside 8, synthetic lanes. Playing a tight swing across ten, bumping the dry, the ball did not overreact. It changed direction very predictably and rolled up very nice.
A word of warning. This is not a dry lane ball...if the heads are toast, this sucker will hook off your hand!
Oh...one more thing...flat black bowling balls are dead sexy!
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Jon (in Ohio)