My DS has been my faithful companion for over a year. At the moment, the right hinge, or the area where the "on" and "Charging" light come on, cracked and fell off. So the top screen flops around aimlessly unless I support it with my index finger. Both shoulder buttons are becoming less responsive and the A button seems to be very worn from use. And on top of that, there are hinge cracks. Should I replace the casing and buttons myself or would nintendo do it for me?