I also noticed that the new SDD (from crucial) didn't have the 4 screws, so I had to move those off the old HD and onto the new one.
My T6 (appears to be same screw driver you have - $6 on amazon for 20piece set) did NOT fit int he battery screws...not sure if I had the wrong screws or what, but I went ahead w/o battery steps and it was pretty easy.
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