I use a Driver with a 45" shaft, and a knockoff Cobra head. Occasionally my drives are straight, but more often it's a fade. I picked up a 3Wood recently, and hit all my drives straight. Not as far, but straight. It has a 43" shaft. Might the reason be the difference in shaft length? Or weight of the club head? I thought the shaft flex might be a cause, but I'll have to drive 100 miles to Vegas to get the flex checked.
Any ideas?