Great replies and info here.

One last question: is it possible you are not getting your wrists cocked properly on the backswing? Or, at least cocking your wrists as much as you do on the long irons/woods?

I mention this because I was watching the Bobby Jones series on the Golf Channel last nite, and Bobby said this was something he had to be careful of with his shorter clubs (not getting enough wrist cock in the backswing).