I've drilled the following bowling balls for Nationals and it might be too top heavy.  So any help would be appreciated.

Invasion
Mission
Megaton
Rapid Fire solid
Natural
Blue Ice

Others I have to fill in are the Mega Friction, Red Death, C System 3.5 Jolt solid.

I thought to bring the Mega Friction for the BTM and the Natural for the 40 Framer.

Thanks for any help.

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Nicanor (Ten On The Deck)