I have replaced an iPod Touch 2g, and just wondering because before it did not have it and compared with my friend's today. Is there meant to be a black edge just around the front screen? I mean in between the bezel and the screen, there is a black edge, maybe glue around it so the screen is stuck with the casing. Is this normal? I just hate replacements that they give me now...I don't think there's much to complain is there? Thank You.