Hi my name is Tina and I have figured it out. OK after the top of your kuerig is off . Look under the top there are 2 long plastic pieces that have a lip on it. Now look down at the inside of the kuerig and you will see 2 holes line up the long plastic piece with the holes . And when they are in push forward. That locks the top in. Now your sews go in with no problem . You now will have no problem closing it. Hope this helped have a great day