Several weeks ago, I tested the Titleist 910 D3 with the Diaman Kai'li 65 Mid, Reg flex shaft. What I felt and noticed were great results for me. After a few hits, I could start to feel the driver head kick and noticed yardage I have never seen before, plus it sounded great! With my R9 I would get maybe 240 to 260 yards. The first night I hit this driver, I started seeing distances around 280. After several rounds hitting this driver, I asked our local Pro to order this for me, with the specs listed in subject line(same specs as the demo club I used). I have since got it and it does not feel nor sound the same. What could be the difference. I am thinking of asking him if I can switch shafts with his Demo, the one I tested, to see if I get the results that made me want to buy it in the first place.