I just need to reattach my external front door screen door as it fell off. The sweep at the bottom has detached itself part of the way. I am wondering if I am able to reattach it or do I need to replace it altogether? It is not a hard plastic sweep, it is that soft carpet like material right at the bottom of the screen door. I also have misplaced the screws so I am wondering what screws I would need to get to replace it? Thank you.