I've finally managed to lose the center screw from the battery cover on my VT75 (the full size, not the nano). Anyone know of a US vendor I can order a replacement cover from? I'm right in the middle of moving across the country and don't have time to wait on fasttech. Or maybe what size the screw is? Oh - the cover itself does a fine job of completing the circuit - the mod works fine but are there any dangers to not having the screw in?