I only fit them in the places where they belong to see if they were the exact fit as the original and then removed them to store for when my old ones need to be replaced when I move to a new house, which maybe soon. I had already super glued the old parts and clamped them until the glue got set & dried. After I had removed them the first time (before I got new parts) they were easy to set in place and then press down to lock in place. It was simple, by looking at the diagram to be sure I did it correctly. I have the parts back in the boxes and taped for storing until needed.