I've looked over the pics and at first I didn't see anything. Then I layed my laptop screen back and I could see a faint line on the 2nd pic. The problem is that the camera casted a shadow that is making it harder to view. Here is the invert. You can see the edges of where the line should be on both side of the strip, just the middle part it missing and I think cause of the shadow. Can you take another shot to get rid of the shadow or better yet, go get an EPT
ETA: I went back and looked more at the last pic. I can pick up a line on that one too. Maybe even a little easier. Here's the invert.