I replaced all old gaskets. During the replacement, I discovered that the old door gasket insert was missing. The only difficulty I had was aligning that new piece I discovered there were 2 points molded into the door and the insert had left gaps to fit into that spot. Once I figured that out it was easy. I'm a big guy and I couldn't get inside the dishwasher to get a visual of the underside of the door so I had to do this by feeling with my fingers.