I got a carrying case for my brand new MacBook Pro (and its absolutely perfect, just to let you know) and I realized that the bag is about two or three inches bigger then my computer itself (which is a 15 inch) and I was just wondering it that will cause me any trouble as in like it flopping around and breaking. From what I can tell, the bag has really great protection around the edges and on top and bottom. So will it make any difference?