MisterS3, I don't think its your grip size that causes a left shape shot. Perhaps you are gripping the club too loosely. While gripping the club too hard will hamper your swing, gripping it too loosely will cause your clubface to close because you tighter your grip just as you reach impact position. I never understand why all the books vouch for a loose grip because I find a fairly firm grip will eleviate a lot of problems. A loose grip will play havoc during the downswing.

Think he may have sorted this out by now, guys: it was a year ago!