Hi Q - 

The Titleist shaft performance chart is designed based on our actual testing of shafts (which doesn't always coincide with the published specs from the manufacturer) we find that it is better to relate how a shaft will play in our products. …

Mike, 

Thanks for getting back to me. You guys are a the best. It's a nice change of pace to have a company that cares about the people who love and use their products. 

Thanks again for your help, and I will see you guys in the near future. 

BrentJWestern said:

One last question (I hope).  What is the difference between the Ahina 72 (made for Titleist) and the Diamana Ahina?

The Diamana Ahina is a tour shaft designed for tour ball speeds.  The Titleist version is a bit softer and is designed…