I see it, What it is is the angle I have the camera at, and the 1c gap from the tub and the top makes it look like there was a tiny gap, but this is a TINY gap, I do that to make sure that there is no gap in the back. I need to put a backing on it, I might just go do that now. At the end of the video you can see that there is no gap when I close it. Thanks everyone for the replys!