Thanks, haven't taken it apart yet. You are brave to disect your mouse, dang that whole springy thingy is a pain. Except for the scroll tension and the scroll wheel as button, everything seems at it should be. I did take a look at the latest generation of neutered mice at Staples. Nothing that looks as nice or as feels as nice as this. Frankly though I haven't been in windows in so long to play my games, maybe it won't matter