If you just make the hole deeper and wider without changing the drill on the ball it may well make it negative weighted. It may even make it illegal.
I dont know if you just planned a self drill on the ball thats why I brought this up. Just looked at your profile so its probably not what you had in mind but I'll leave it here just incase someone had that idea.
If you want to know the difference, then as Bob says. Top guy our Bob.
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Happy go lucky bowler from the UK
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Did someone say tough luck
Want to learn to read lanes then visit:-
www.thebowlingprofessor44.com/Edited on 11/29/2005 1:37 PM