I have disassembled a 3DS but cant figure out how the hinge goes together on the side with no ribbon cables. I know the black/silver/white thing goes in the end and its supposed to snap back into the body so you can connect the 2 halves and then snap back into the other side. But whilst the thing is in it wont move back any further. I'm baffled. Can anyone please explain it to me as I'm obviously not getting it. I have attached an image.