I have 2 balls drilled 5x4x2.One ball is drilled with pap 5 7/8 up 7/8 and the other is drilled with pap 4 3/4 over up 2 3/4.I have not seen any difference in ball reaction.The reason for this was i was using a up the back release for some lane conditions and a spinner release for a burnt condition.I then changed back to the high track release for all shots and using both balls i have not seen any difference.My question does it make any difference what your pap is to get a ball drilled?