Hi Titleist,
Really happy with my 910D3 driver with the aftermarket Ahina 70x, this was supplied with minimal tipping by Titleist (1/2" to fit into the surefit tip), the shaft is firm enough and produces a nice launch. I have no issues loading the shaft, but in the past found 1" tipping distroyed the feel of the Diamana shafts. The Ahina 70x beats the Project x 7A3 and feels more stable, for my swing. I am one very happy customer with straight long drives.
I have demo'ed the 910FD 13.5 with the Diamana Kalli 80x (aftermarket) and this feels good, however can this be supplied with minimal tipping ( (1/2" to fit into the surefit tip) as I would like a mid launch and this is a driving club and will be used on long par 5 holes off the deck (I know you probably tip 1" in a FW wood normally).
I did try the TFM Diamana shafts and agree they are good, but even with 1" tipping they did not provide the same consistant feel I'm looking for and I found the after market shafts and more consistent for my swing.
Thanks Titleist (BTW - love my new 712CB 2-iron with Project X 6.5 steel, custom order and deleivered within a week - impressive)
Mike Paul