eat your chunky 9 Iron soup.

I am hitting everything well, except my 9 iron through wedges.  It is really frustrating me.  Everything is chunky any suggestions?

That's odd. I think that's the opposite of most people.

Make sure you're coming down at the ball. Hands forward helps a lot.

May be overswinging on your takeaway. Check in mirror, make sure you're not overdoing it coming back.

When playing, check and see where you're hitting ball on clubface. If it's toward toe, you may have slight over-the-top move, which sometimes goes with overswing.

My pro says experienced golfers sometimes can catch themselves and not completely miss the shot, but hit it fat when trying to get balance back on downswing.

Make sure you are putting your hands ever so slightly ahead of the ball at your setup. I did that today and it worked wonders.

Something similar had been happening to me recently (just on my 52* gw and 56* sw).  Chunky or thin.  Even on the rare solid feeling shots (with my sw), it only went @ 70 yards on a full swing.  I didn't know what was going on.  I seriously considered calling BALCO to order the cream, clear and flaxseed oil because I lost @ 30 yards on my sw.  I discovered that I had been trying to steer shots with those clubs, so I was hitting them with just my upper body.  My lower body literally just froze on those swings.  Once I incorporated my lower body back into the swing (and worked out the proper sequencing), my CDD (contact, distance and direction) returned.

Hope this helps!

I'd say your ball position is too far in front of your swing bottom.  Most of these tips move your swing bottom up to the ball.  I'd rather move the ball back before the swing bottom.  Take some practice swings and stub the ground and find out where in relation to your body the club hits the ground.  Then put the ball right before that point so you hit it first.

I like that tip!  Will take note of it at my next round...

EUREKA!