I would advise working to step six, then skipping to step 16. Take the speaker cables and plastic frame, once the screws are out, and gently fold them back. I used a stiff plastic-about the thickness and size of a credit card to work the glue off from under the battery. No heat or alcohol. All together, from opening to closing, a very simple 15 minute job.
I followed the steps and unfortunately the left speaker socket came off of the control board. Which is why I advise not doing the steps between 6-15. Once the side frames and speaker is off, just fold them back and out of the way.