Hi, I have the opportunity to switch from my old driver to a 913D3 driver. It has a aldila ATX65-4.5-R shaft that is cut 1/4''. The person that would give me the driver says it is stiffer than the blue diamana stiff shaft that comes when you buy the driver from the store. Is that true ? My clubhead speed is around 110 mph. Would you say this driver is stiff enough ? Thanks, Marc