Wow, thank you all very much! There is such knowledge here. I genuinely appreciate the help. I didn't give enough background info in my first post. I was just so excited to have found this forum. I've been bowling since about September of last year, and just finished summer league. My book average is 164. Not a total newb, but ready to learn and practice as much as it takes. I'm comfortable using tape in the thumb hole, I've just gotten used to having it be a bit too loose. So when I actually put a piece of tape in there, I can't get out of the ball on release. Its totally mental, but I'm totally mental. So there ya have it. Tomorrow I'll work on my timing. Then let it marinate in my mind Friday, and practice more on Sat. Winter league starts Tuesday. Thank you again for the help.