My current (older) driver still gives me ample distance but I've always had trouble controlling it, accuracy-wise. If I was to shorten the shaft I realize that would help me with control. The question is, by how much? How do I know whether to use 45" or 44.5" or 45.25", etc., etc.? Could I use impact tape and then shorten based upon the patterns? I'm considering a new driver; 913 D3 is at the top of the list but it might have to wait until next year so I need to make the old driver last one more season. Any thoughts or ideas will be appreciated. Thank you.