Crazy Stain Removal on Marvel Key

This time I'm tackling a major stain on a big Marvel Key that goes all the way through the comic. Will I be able to get it all out? Looking to start cleaning and pressing your own books? Here are two guides to help you get started! Comic Book CPR: https://amzn.to/3aydbqa Comic Book Stain Removal and Whitening: https://amzn.to/3Po9T7H Links to the tools I use: 15x15 Press: https://amzn.to/3OwZ6aS Makeup Pads: https://amzn.to/3tWOASq Absorene Eraser: https://amzn.to/3HUTNjC Absorene Putty: https://amzn.to/3PuxMe7 Artist Eraser: https://amzn.to/3ndANTH Magic Eraser: https://amzn.to/3ORrHbG Hydrogen Peroxide: https://amzn.to/3OgRDx6 Mister Bottle: https://amzn.to/3A08lwu Copy Paper: https://amzn.to/3zYSyxL 65lb Paper: https://amzn.to/3zYSyxL 100lb Paper: https://amzn.to/3OiN4lT Magazine Backer Boards: https://amzn.to/3yfFyTf Blue LED Lights: https://amzn.to/3btFoig Light Bulb Cord: https://amzn.to/3bomgSF