Okay so in the tower in the little area by the postmaster and eververse the floor is concrete.. everywhere else in the tower that has concrete, jumping on it makes the sound it would make if you were to jump on concrete.. and every place that has metal flooring makes the sound it would make when you jump on metal. Except for the area by the postmaster and eververse if you jump on it you'll notice a metal clanking sound. It obviously has nothing to do with gameplay or anything really I just think it's kinda funny and wondering if anyone else noticed it.