I purchased a Journey Into Mystery comic on e-bay that had a definite "C" shape to it. This Silver Age comic apparently was jammed into a box barely wide enough for a Modern Book. A lot of bidders stayed away from the book because based on the scan, it didn't look much better than a Good/Very Good. Needless to say, I got it for song. What I did to the comic was place an 8 1/2 x 11 sheet of white paper on top of the cover and on the inside of the front cover and proceeded to carefully "iron" out the bends with an iron. After the cover was done, I proceeded to do it page by page until the comic transformed into something resembling a VF-. The iron should never touch the pages.Be careful not to get too close to the spine, as it wouldn't take much to create a few stress cracks if the iron gets too close. This will not take out any creasing, just bending as you described. Let me know if your not clear. If this has any long-term damage to the book, I'm not aware of it. A year later, the comic still looks might VF.