Great guide. I followed it all the way to the end. Too bad my replacement superdrive was a dud.
If I have any feedback for this, I would put step 7 after step 8.
I did have a heck of a time taking out the 4.5 mm Phillips screw in step 13. The blue stuff in the screw had dried and I had to use needle nose pliers plus rubber band to get enough traction to coax it out.
For step 8, “Remove the single 2.2 mm Phillips screw inserted horizontally into the side of the optical drive.” I stood the laptop vertically so I could get more torque — trying to unscrew it sideways while the laptop was flat didn’t work at all.