So my Groove caught on fire today. I had been having the button not firing issue, but it was still firing every other push or so. I guess the device finally got tired of the over pushes, and I heard a little pop and smoke started pouring out of the vent holes from the back. Since this is an enclosed battery, the only way I could stop the "fire" was to take the device apart and cut the wire. I am really sad because I loved the Groove, and now I am stuck without a HV mod for a couple days. On a good note, The vent holes worked wonderfully. I guess I am off the the classies now to try to find a quick replacment.