You had a shoulder replaced? Curious to hear your tale on that one. I have two crappy ones and someday will have to go down that road, but for this gym boy it'd be a life changing event, so putting it off until I can't move. Right now my biggest limitation is range of motion, or the lack thereof. I have to be careful which weightlifting things I do at the gym to keep from aggravating them too much, otherwise I get around pretty good.