The parts that are used to open the door were poorly designed.  They were plastic and could not handle the force stresses of opening the door repeatedly.  The first I repaired by installing two additional screws to give it more stability. The second was the Door Opening Level. This part should have been made of metal.  The oven still works except for these problems with the door latch mechanisms.  I would like to replace it but not sure I can find the part.