The plastic adhesive sheet was SLIGHTLY too big to fit perfectly into the grooves. One side went in fine, but I had to use the tweezers to fit the other side of glue into the track properly (pushing down before pulling the sheet off would likely have mashed up the adhesive).
This was honestly easier than I thought it would be. The only complication is that the right side of the plastic was just a hair too wide, so the glue lined up perfectly on the left side, but wouldn’t fit in perfect on the right. I simple pushed everything down as best as I could, removed the cover, and then used the tweezers to make sure the right side of the adhesive was in the groove.
The problem could have been on the left side if I inserted the glue holder different, so it would work either way.
There is a little square on the adhesive covering that should be removed before you remove the rest. Otherwise, you will have just that little chunk of covering left, and won’t be able to touch much of the adhesive pad while trying to get it off. I managed it, but doing it the other way around would have saved frustration and removed any risk of stretching out the glue.
Can we all agree that thinner phones is not worth this crap?