I'm not sure you can get drivers adjusted Sparko, I would think the hosels would be too fragile and of course if its a
Callaway driver it wont have a hosel at all.
As for the length I dont think many people regardless of their height, arm length etc get a longer shaft on their driver. Half an inch wont hurt I suppose but its just another few yards into the timber if you cant control it.
Whats the set up on the driver, shaft wise (length weight and flex)?
D.