[Jim.Cook]

Could hitting low be because of the roll of the driver face?

On most drivers, if you hit it in the center of the face the loft is what is advertised for that head. If you hit higher than the center then the loft of the face, because of the roll will hit the ball higher. If you hit below the center it might produce a great worm burner.

I had this problem when I first started golf. I then switched to a Wishon driver that does not have roll on the bottom half of the face ( his design is the only one that has this).