Took off my BAND today and noticed one of the battery covers is seems to be loose near one of the screws. If I flex the band, there's a sizeable gap between the cover and the band and I can see something metallic, possibly the battery. I can't tell if it is splitting or the torx (star?) screw is loose. Since I don't have the right tool, I can't try to tighten it down. Just curious whether anyone else has seen this. I'm a bit concerned that sweat will get in there and mess with the battery.