Actually found the battery cover to be slightly loose in the back; i.e. it would make noise when pressed in the back or the left side. Noticed that the battery was slightly loose in it's bay. I folded up a post-it note into a 1 inch square, adding about 4-5 mm of extra depth above the battery. Closed the door, now the cover is rock solid, fit perfect, no noise or looseness or movement.