Jonathan has checked everything out and he said that the cleats are in pristine condition, no signs of wear. I did call Speedplay this afternoon and they are sending me something to install between the cleats and shoes that should fix the problem. It is an "elastometer"? That probably isn't spelled right, but it is a warranty item and after he carefully questioned me regarding what is happening he was quite confident that this would fix the problem.

He did say that the lifespan of the cleats are from 2,000-5,000 miles depending upon riding conditions. He doesn't think this is the problem once I described my riding conditions - they never get wet/muddy/dusty, aren't used mountain biking, etc. He also said that if the small rear limit screw is overtightened then that prevents the crown from fully engaging and causes the same problem. If I trusted my hand strength I would install the "whatchimacallit" myself, but I don't so will have my LBS install it. I won't ride my Gunnar until this has happened, it just doesn't seem prudent. Hopefully this will fix the problem!