Unit screen door maintenance help!

Own a 26' Jamboree which needs some work on the screen door. First, where can I purchase that fuzzy-like stuff that slides into door frame? As is, it serves no useful purpose that I can see and the door just rattles constantly.

Second, the hinges which secure door to frame. Originally, they used rivets to secure to frame; but the bottom four are damaged (heads missing) probably due to vibrations and rough road over past 6 years. Can I use self tapping screws to secure or??
Any advise would be appreciated. Thanks in advance for your suggestions!