Has any one purchased the 2010 Dowins yet? I recently bought a pair. Having problems forming an opinion on them. Right now, I don't think I like them. They are really causing me to rock forward onto the balls of my feet as if the soles are not flat. Don't mind the single strap though. Guess I'm looking for someone to say they have them, experienced the same thing, but once they were broken in they were fine. I want to return them if not. Any help would be awesome!