Hello, I recently decided that I wanted to build a box mod that runs off of the DNA 200. Being new to building box mods, I wanted to ask some clarifying questions about installing the board itself. To begin I would build the box in a Hammond enclosure; an aluminium box with nothing on the inside. The implication I am coming across is that the board grounds through its screw holes. Is it acceptable to operate the board without it being grounded to the enclosure? If not, how might I get around this? Additionally, not having much experience with securing circuit boards, I was thinking I would simply apply epoxy to the board to secure it to the enclosure, is there a certain type of epoxy I should use? Or is there a better method to go about securing the board? Just as a side question, what would an optimal method of creating the micro USB hole? I was considering just buying a micro USB bezel off of shape ways and positioning it correctly, would that work? Thanks in advance! P.S. When installing a custom switch on the board, what should the switches be rated at?