A tip for installing/lining up the screen, at least this is what I do.
Put hot glue on the top of the screen only, then before the glue dries, lightly set the screen cover/protector over it and hold the screen centered from behind while the glue dries. Then take the screen protector off to keep it from getting scratched and finish gluing the screen in from behind.
Once the screen is secured from behind, use a shop vac on reverse to blow any dust out of the screen area before installing the screen protector over the top.
I used to install the screen protector first but it was always a pain to try and keep dust out of there while also trying to line up the screen from behind at the same time.
If you ever try to remove the new screen protector, do not just push from behind as it could break. I use a thin guitar pick to firmly push around the sides of the glass from the top until it pops up on one side. This seems to be the safest way to keep it from breaking.
