Only way to protect Samsung's screen protector WAS to put a film protector like LK Film on it when you received it...I hope new owners read this post..
Badly, if your screen protector is scratched, you have to remove it and put a Whitestone dome glass protector..Some company are selling something similar but the tray broke when you put the glue and the glass on it..READ REVIEWS BEFORE BUYING
Deconphil, if i remember, your tray broke during installation...Am i right ? You were lucky than the glue don't reach speakers and obstruct them or else...
P.S. LK film is not a good screen protector IF you have already REMOVE the Samsung's screen protector... Shaggyskunk1 suggestion is the best solution for YOU (Shaggy don't forget my bonus 😛) joke