We apologize for the inconvenience that you have experienced. If you are having difficulty installing a screw cover on a new storm door, please check the location of screw holes along the entire length of the rails or rain cap. If the screw holes are off-center in the screw cover track, the screw head may be sitting too close to the edge of the rain cap or rail preventing screw cover to properly snap into the screw cover track. Please contact the Andersen Solution Center at 855-337-8822 for assistance about the installation of the screw cover. - Arnie