I have been playing the 910 D2 10,5 for a few months now and love the feel off the club face. My natural ball flight is a soft draw but I have a real problem with keeping the ball down. I'm Currently playing a diamana kali shaft and have it set on A4 but I have no control over the trajectory of the ball. I swing between 118-120mph and am 19, 6'1, 200lbs. I know my rpm with the driver is over 5000 which is far too high, I get near to no roll with it. I love the club and want to keep it in the bag, it's just a case of making it fit my game better. without seeing me hit a ball what would you suggest as a shaft replacement?