The rubber covers for the door microswitch, just above the door stop, circled in red

P.S. The fact that your door stop is not painted red, may indicate that it may have at some point, been repaired. Thats a good thing, as those are noted weak points

 

Thanks everyone. I'm ordering the bumper inserts and the micro switch covers now. Trying to decide what else I need that doesn't cost more than 1k......I guess its time to place my order with Marcus.