I unboxed my inspire 1 pro last night and after 4 hours of trying to get it to update DJI sent me to the chinese update page where they have an "isnpire 1 pro .bin" that finally worked.  So I get that taken care of and turn the second remote on to test the movements and image.  I turn the camera and notice a small buzzing when going across a certain spot.  I go back and sit it on that spot and it vibrate viciously and makes a very loud buzzing (like metal on metal)  Needless to say I am returning it to BH photo today for an exchange but was wondering if this is a bad sign?