Cool D,
I have glued mine in but will honestly say, after building over 20+ N5's and N5c's I haven't clued mine in years.. You want to make sure when you install it, make sure you spread the grommet out, meaning don't pull it tight around the corners, this will have the tendency to have the edge raise up. Remember you get one shot before you trim any off. Going back to the glue, I never liked seeing the residue around the frame. Gotta be carful if you choose to glue it in.. Good luck brother, you will love this machine!!
💪🕶
K