Note that the front glass panel is quite light. When reassembling I found it impossible to get the LCD free of dust with the computer lying on its back. I had success with standing the computer up, tilting the LCD down as far as it goes, holding the glass panel upright in front of the computer (about 1 foot away), lightly spraying both the LCD and the back side of the glass panel with compressed air, and then attaching the glass panel (with the computer upright). It took me 5 tries before it was completely clean of dust once the front glass was on.

Sorry, this note should be for Step 25!

On my model, both left-side screws are short and the (lower) right screw is the long one.

The screw at the lower end of the I/O frame may be longer than the one at the top. Use the longer screw at the bottom (with the black plastic spacer).

If you find yourself having to bend the logic board to get it out (or back in under the Airport antenna cables), consider loosening the left display hinge to allow more room. Loosen each of the 3 screws on the bracket where the antenna cables come out and you'll have a lot more play.