There are a lot of things in which Padraig does well with the putter, can you point
out some of the things you like and some the things he could look to improve.
One thing that I saw that looked awfully good was the shape of his left arm
(forearm and upper) keeping its shape so well.
Not commenting on his stroke, but I know Harrington has worked with Harold Swash and Paul Hurrion. I believe in the PGA he one putted 6 or 7 of the last 9 greens!