Hi Derek,
Just so happens my father is flying in from Rosscommom today to see me, they live in sunny Ireland.
Back to business, do you find your divots point to the left of the target, if so then you are coming down on the outside with the short
irons, then staying there through the ball because the rest of the swing is fine, you may find this is more to do with a little anxiety and simply rushing the shot.
What I have described is based on my own experiance, may not be for you, just a simple case of standing to close, if so then set up to the ball with the toe of the club.
Hope this helps
Ian.