I just purchased the 913 D3 8.5 Driver with the Diamani Whiteboard Stiff Shaft..  My AP2 iron specs are 1/2" Short and 2 Degrees Flat.  I have set the Driver Up in the C4 position that makes it 9.25 Degrees of Loft and -.75 degrees Flat.  My previous driver is a 350 CC Driver  and 44" Long so the new driver is heavier, longer and larger.  Too make the D3 Driver feel lighter should I switch out weights, shorten the shaft or both?