In addition to Todd's comments, it could be that your shafts have too soft of a flex for you. With this info and the info from your other post, I would say you are hitting reg flex shafts in your
irons and an x-stiff shat in your driver. If you were to switch to stiffer flex in your
irons and a softer flex in your wood, you should loose a bit of distance with your
irons but gain some control, and gain some more distance in your driver. Best bet, get your set checked out with a pro clubmaker (check here for someone close to you:
http://www.proclubmakers.org/ ). They will be your best source of advice.