My case doesn't fit!
A 1mm gap is common. If the gap is larger or you can't get the two halves together, there are a few things you need to check. Make sure the top panel is properly aligned and fitted with the pegs from the dvd drive. On the other side, make sure the 4 pegs in the center fit into the holes in the metal. These can be tough to see on the smoke case. Finally, if you're having trouble closing the back, you may need to remove any extra plastic from the molding process using a metal file. But if you can get the clasps to snap together, it should be fine.