Hello everyone..I'm having an issue with my NBV4 assembly setup..I believe the speaker is rattling around in the speaker mount causing it to make a really annoying rattle. The speaker isn't blown because when I pull it out of the hilt and slightly squeeze my hand around the speaker mount the rattling stops and it sounds great. Does anyone know if there is a way to secure the speaker firmly without having to take the hole thing apart? None of my hex keys are working on the little nut that seems to hole the speaker mount on. I was thinking about trying to super glue the outter rim of the speaker down but wanted everyone's advice before I did so. Any help would be appreciated..thanks!