I want to make a minor change to my gamertag. $10 seems a lot but I've thought about it for a long time and decided to go ahead and put a space after the U in NAU (I have my reasons). So I got the points and went to the screen and added the space and selected done and got a message that the gamertag was already in use. Really? I've tried looking it up and I can't find it but my current one shows up if I search for it. Could it be rejecting because it is too similar? If so, is there some way I can make this change without doing it twice (to something really dissimilar and then back to what I want) or maybe I can get some help to make this really minor change? I'm Ok with spending the 800 points.