I had the same problem. The #00 screwdriver worked for some of the screws but some others were too tight and I had to use a #000. Maybe it was because the cover had slightly bent because the battery inside had basically doubled its width, but I still found that the #000 was a much better fit for these screws. Even the ones that came out with the #00 came out much easier with the #000. I would suggest updating this guide to suggest using a #000.