Hey everyone, I went to the power support website and looked through the tutorials and cannot find on how the back installation works. I haven't started yet but I bought the 2 piece set which contains the front and back protectors, and only one pre-installation film. Based on the tutorial, they used the pre-installation film to make the protector stick. But they only gave me one, so what are you suppose to do for the back? Did anyone ordered these and know how it works? Thanks for the help.