I just  bought a 910 D2 9.5 degree Driver and I want to put my own UST MAMIYA ATTAS shaft on the 910 D2 driver. I asked to one of titleist representative at demo day whether I can purchased the tip of the titleist shaft and they said Titleist doesn't sell only the tip. What do I have to do to change the standard 910 D2 shaft? thank you.