I am currently hitting a 909D Comp 10.5 Reg Flex X-Con 5 shaft. My swing speed is consistantly 90 to 92 mph. The X-Con 5 seems to baloon on me quite a bit and I am thinking of purchasing a 910D2 10.5. Any idea on what shaft would keep the ball flight lower. I know they have 2 different Reg Flex shafts. Any suggestions would be appreciated.