Why so high?

I'm an 8 handicap that is having driving issues lately. I finally got my swing down (along with my scores). Irons (710MB) are a little high but nice soft landings and plenty long (8 iron is 155 or so). My 3 wood (710Fd) shots are bullets, good for 250-260 yards or more. Until last week, the driver (910D3 9.5 dialed down to 8.75) was the same and way out there. However, recently only the driver started to go a mile high. It's not fading or slicing. It's just high and a little right. It's still out there close to 300, and the ball mark on the face is dead center. How can I be getting the ball so high without opening the clubface or getting under it? I tried moving the ball back in my stance, but all that did was add a fade. I can live with the high ball, but it's tough on my home course because there is a lot of wind.

What could I be doing with the driver that I don't seem to be doing with all the other clubs? I figure I must be getting the head in front of my hands, but that usually results in a draw and/or loss of distance. Neither is happening in this case.

Help!

Maybe you're getting a little steep with your downswing???  When I start hitting the ball too high, getting too steep is often my problem.

steve make a good point also try teeing the ball down lower. let the ball come of alittle lower than center face if your really that worried.

My guess is that you  are swinging more up on the ball than you had been.