Kingpin, I used to have a problem like that so I went to a different driller and found out the guy drilling my stuff wasn't doing it correctly for my hand. So, you might want to look into getting a new pitch, maybe some more oval, maybe different beval because if a ball is drilled properly for your hand you shouldn't feel pain after bowling just 10 games in your hand.
PS, that thumb saver reminds me of something that Al Bundy would wear.