Okay, I have been noticing this, but why does it leave some marks on the N9? (there's a small triangle sheen on the back of the N9, that part shows where the case was glued on together) I can only see it under direct light and I can't take any photos unless I have my N8 Also, why does it seem so hard to put on the N9? it's like it's gonna break or snap off, but the shape is deformed right after.