Samsung SYNC SGH-A707

Has anyone, or does any one know how to take apart the lcd portion of the phone. My phone has a smudge on the lcd where the plastic is pressed against it and I am thinking that if I remove it i could put something in there to keep it from touching. I would rather do this than get a new phone and have to redo all the settings that took me a month of tinkering to get right. So far i took out the two screws on the bottom of the lcd but it seems like the only way to get the plastic over off would be to force it and I dont want to risk breaking it. Thanks for any help.