so i preordered my 3ds and got it at midnight and have been playing it for the past 24 hours but there is a tiny black dot on the touch screen. im pretty sure its not a dead pixel since when i move my ds around the dot moves above the display, i think its a piece of dust or dirt trapped between the touch screen and the display. the question is should i take it back and get it replaced over this small problem or just keep it and hope nothing goes wrong? nothing else seems to be wrong with it, everything ive tried so far works fine just this small problem is scaring me, i dont want my touch screen going out if its not a piece of dust