I've saved your pics to my phone so I can zoom in - can deffo see a faint line on the first shadowy pic and on the second, but bizarrely not on the close-up.
Ooooh this is so nerve-wracking. Ignore me about testing later today - I was getting carried away, sorry. Try again in a couple of days if you can wait that long.
In the meantime I am brooking no argument at all.