I've been bowling for over 30 years. Was a PBA member for 20 years. I know all about taking care of equipment. No exotic drills either. Yes, grips. Only 1 company I have issues with and it's this one. Been with the same ball driller all these years too. My other equipment is just fine. I've had a creature, creature pearl, bank roll, double clutch pearl, link, and the bank now. They have taken care of me in the past but I still have to pay to re-drill them. I've had them in a temperature controlled environment never below 60 and never above 80. I love throwing money away. Remember, money grows on trees. That's why our country is in the crapper right now. Not the drillers fault. So got to pay him. Rant off.