I tried the MFT 'ahina X flex in a 910 D2 10.5 deg. I had to put the club in the D2 setting to keep it from ballooning high and right. I tried the RIP alpha 70X shaft and am back to the A1 setting and loving the driver. I really love the way this club sets up and plays. This is the first driver I've hit in the last 4 years that has kicked my Tour Burner TP 10.5 with Fuji Rombax 75 x out of the bag. I'd like to try a 910F 15 deg with the Rip Beta shaft, but have been unable to find one. I've read posts from back in the winter stating that the Beta x flex had passed testing, and was on the way to the market. Is this true? Where can I find one? Or....is there another shaft with mid launch that fits the 910F better?