Excellent write up. Three suggestions which i uncovered when i followed this procedure:
Step 5 - The silver shouldered screw was a T6 Torx, not a T7. On this basis, I didn't need a T7 Torx screwdriver for this procedure.
Step 15 & 19 - To remove the corner screws (the heads of which aren't immediately visible), you need to carefully remove the covering mesh with tweezers
Step 44 - Reposition of trackpad. I found that when putting the trackpad back in place during reassembly, it was tricky to get it in exactly the right position (perfectly centralised). I found that taking four small pieces of paper and folding them in half helped. I wedged a piece of folded paper in between the four sides of the trackpad and then tightened the screws. Once the screws are tightened, you can simply remove the paper.
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