snusmumriken
Subscriber
I agree with Matt, I cannot see any streaks either. This could be a scanning problem.
I thought I see could see them in the post #121 images, but not equidistant from the sides: about ⅓ of the way across from left and right, running vertically relative to the image. If I'm looking at the right thing, that symmetry suggests the sides of some liquid effect running down the film centre. In post #114 the more obvious and bulgy streak also has a 'liquid' signature.