I found the blog post and the comments interesting. Generally, I defer to those with credentials, experience and in the business of coaching. When I had my Retul fit, we discussed cleat position and my fitter coach dismissed the cleat position as not adding a lot of value. He attends seminars put on by USA cycling and keeps up to date on latest stuff. To think that one can get a lot more power by moving a cleat seems questionable. However, I just ride these things and rely on third parties for advice. My advice would be... be very careful in changing fit and allow a lot of adaptation time to prevent injury.