Hopefully this is not a strange question, but i've been looking to go from my mp-62 to full blade mp-68's and using the mizuno demo club (6i) i played around with the DG, PX, and KBS shafts. I found the KBS shafts the "smoothest" feeling for my swing out of the bunch. My mp-62's that I have had for almost 2 years had DG s300 shafts, and I never really got a good feel for the shaft, and sometimes i would get a higher than "normal" ball flight. I know that the KBS tour shafts are supposed to launch higher with more spin, as opposed to the DG more "penetrating" ball flight, but I found that the ball flight with the KBS shafts were much better for me overall. I tried both the stiff and x flex kbs shafts with the mp-68 demo head and actually found that i loved the x flex shaft, i could really go after the ball more effectively. After several days of trying all the different shafts, i was told to use the mizuno shaft optimizer, which i did, and it recommended as one of the chocies, kbs tour X flex soft stepped once. However, since there was no soft stepped kbs tour x shaft in the mizuno demo kit for me to "try" out, I was extremely hesistant to purchase. I went ahead and ordered the x flex kbs instead with no soft stepping since this was the shaft that felt the best for me when trying all the different shafts. I received the clubs, and I love them, however, the question that I have is, for some reason, the clubs feel a bit "heavier" than the demo mp-68 club with the same kbs x flex shaft in it? Is this a swing weight issue? My clubs are all standard lenght, lie, loft, etc., but could the demo mp 68 6i with the x kbs tour shaft have a different swing weight than the purchased mp 68 6i x kbs tour shaft that accounts for the "heavier" feeling even though the weight should be identical? If so, what impact can I expect this difference to have aside from just "feeling" different. Also, any way to get the same "feeling" I had with the actual 6i demo club? Thanks.