Quote Originally Posted by UltraMarginal View Post
...the first time I screwed mine back on it seemed in but then moved further and by the time I was finished the cover had moved nearly another mm from where it stopped the first time.
This is exactly what I went through too; I noticed that the plate wasn't seated correctly so I "Popped" it into place & then screwed it in and it indeed closed up a further couple of mils.