Small tip; I often run a length of black electrical tape the whole way across the scuttle so it sticks to both the scuttle and the screen (make sure you clean the screen and scuttle with alcohol cleaner first so it sticks). If you do it neatly enough you can line it up perfectly with the line across the top of the scuttle so you can't see it. I often do this as an extra precaution after I replace a screen. It doesn't last forever, but good quality electrical tape is pretty water resistant so it lasts a good while