I have a GE spacemaker. I have a GE spacemaker xl microwave and the stupid plastic peice of ****

Question

I have a GE spacemaker xl microwave and the stupid plastic peice of **** plasic trip cracked all along the bottom of the door and the glass is falling out. I am trying to remove the piece and I can't get it off. How do I remove it so I can replace it. These microwaves are ****. My mother's handle also broke!