Hi all, so Walking Dead day just finished and lucked out in my first blind bag opening with a 1:100 pencil sketch of TWD issue #108 variant. However, the comic was stuck to the blind bag that it came in and left a glue residue and long vertical mark in the back cover. Can this be considered a manufacturer defect if graded? And i also notice that the back covers on a lot of the issues were smudged or has some dirt or something. And being a pure white cover, you can easily see them. Does that affect grading at all? Im new to grading so I would know how to differentiate a VF to a NM. Any help will suffice. Thanks and cheers!