I have a D3 8.5 Driver with Diamani Whiteboard Stiff Shaft 45" set at C4 which makes it 9.25 and .75 Flat. What is the swing weight of my D3 Driver? If I were to shorten the shaft 1 inch what would that do to the swing weight? The reason I ask is that I just switched from a Cobra 350 CC 9.5 Degree head driver with 44" Shaft and the Titleist D3 feels heavy.