It would be useful to have a heads up on how to get the CD/DVD drive back in place. I found ejecting the CD tray before shutdown and disassembly gave me some wiggle room when reinstalling. Then, you have to slide the CD plug into the motherboard jack before snapping the back cover into place. Make sure the screw hole on the CD drive aligns properly with the screw hole on the motherboard.

Also, my battery had 3 screws; one at the "top," one at each bottom corner.