I put a plastic jar in the microwave without knowing there was metal under the remainder of the safety cover. When I saw some sparks in the microwave I opened it and through the jar in the trash.
Later that night my wife wanted to microwave a snack and she yelled to me that we had a stalagmite in the microwave. I looked at it and realized it was plastic that had melted. Ordered the part which came sooner that predicted. My wife cleaned the microwave and using the instructions I found on your website was able to pop off the damaged part and and easily install the new one.