Hmmm, Locally we originally called that drilling "Johnny-weights", as Johnny Petraglia used them quite a bit in the 1990s, when dynamic cored balls became popular.

I'm skurred to drill thru the PSA (or even near it), at least on the Impulse!

I brought one of the Classic Zones to the shop today, gonna git r done!
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Nick Smith ... A.K.A. Les Badderâ„¢
Brunswick -=- PBA 03-05
¡Viva la nación de Brunswick!

What will this do because I'm very interested. It sounds like a Predator Sparkle I drilled up some years ago and I loved the reaction.
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But the LORD is the true God, he is the living God, and an everlasting king: at his wrath the earth shall tremble, and the nations shall not be able to abide his indignation. Jeremiah 10:10

Ok, the ball is mapped, 2" pin, PSA 45degrees, that puts the CG almost dead right of the center of grip. With 3.2 TW, I shouldn't have to take too much weight out, I just don't think there will be much of a variance between thumb/finger. By drilling a sizeable hole through the PSA, it may shift finger weights over 1oz.

I have to have at least a 1" hole 3" deep to get the cheater reaction, yes?
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Nick Smith ... A.K.A. Les Badderâ„¢
Brunswick -=- PBA 03-05
¡Viva la nación de Brunswick!