Hello, not sure if this is the right place to post but I have a Smoant Knight V2 that is doing some weird things. The fire button seems to have lost its click (can't remember if it really ever had one), anyway, am planning to dismantle and see if there is an obvious problem that I can fix. There are two screws in the battery chamber which when removed, allow the plastic insert to be only slightly moved. I am not keen on forcing this insert any more than I have in concern of breaking something. I originally thought the area surrounding the 510 plug might unscrew or similar but this seems very firm. I have looked around the net but haven't been able to find anything. Any help appreciated.