Hi David Everett: My name is Alejandro Cabezas, and I also scratched the focusing screen of my canon 70d trying to clean it, and wanted to ask the steps to change it because it is different from the focusing screen of the 60d, which is the only one that has to change in youtube tutorial, as this screen is changed and if I could leave photos of the focusing screen you bought and had the same original form to avoid mistakes, thanks in advance and a hug