I bought 712 ap2's last February. I was fit at my local golf galaxy, they fit me in dynamic gold s300's. my distances have not changed, I have had a hard time getting the ball online consistently so I went in and asked to use the shaft optimizer( which they didn't do the first time) and it recommended KBS tour x stiff shafts, along with two other extra stiff shafts. They told me that it has been to long and they won't do anything for me. Why wouldn't they use the shaft optizer for every fitting. It is rather frustrating because I spent $1200 on irons only to not have been properly fit and now I am looking at $500 to $600 to have it corrected.