Good luck on the grip.
That is the one thing I wish I could of seen a pro with. We don't have any instructors in my area.
This is the first year I've felt comfortable with my grip and that is after spending hours finding diagrams on the net.

My problem was the same as yours. To high in the hand. Then I went to, to much in the fingers. I finally got it right, and then I saw an episode of Bobby Jones lessons from a legend on the Golf Channel. He made a series in the 30s about breaking 90. Well this confirmed my grip was right.

Made my iron shots a lot more consistent.

-Dan