Also, once I removed it, I thought there was more to do. It happened so quickly and effortlessly! I kept wondering when the difficult and trying part was coming. I was kind of disappointed by the lack of the challenge, but that's OK! The difficult part came from reversing the directions and getting the shield back in place. A cable covering on the back edge under the shield slipped out and prevented the metal tabs from seating correctly. Once I figured that out, it was smooth sailing!
Again, I was missing a screw here--the left one! The process of removing this part was not a problem.
This is where things got interesting for me. I had 4 missing screws! I don't know if it came from Apple like that (highly doubtful) or if it was returned to me without the screws from the Apple Store repair I had done to replace the Latch (more likely, huh?).
Steps 10-12 were just as easy. I bought & used the Spudger, too.
Steps 7-9 were effortless for me.
I didn't find this step difficult at all. I have very short nails. I imagine a woman with long nails might have a problem grasping the rim and pulling up.
I bought & used the tool kit that you sell for this repair. The 3 rings came off when the screws came out--maybe because the screw bit holder is magnetized.