So I tried to rebuild my new kayfun lite clone. I tried to remove the bottom tray from the part that contains the screw terminals. I unscrewed (tried to) the very bottom screw (the part where it connects to a 510 battery. That screw just resulted in one of the screw terminals falling off and now i cant get it back on or even remove that tray at the bottom to make attaching my coil a little bit easier. So, can someone tell me first of all how to get that bottom tray off and secondly, how to remove the screw that is in the 510 connector?