From: Richard Meyeroff > > Peter I haven't tried to burn anything to the 111D because I still > need to clear the face plate. > > But I am running Tiger.8 so I don't expect any problems Here's something to try: open the burner door with a fingernail on the door top. It's kept in place by a hinge in the lower corners and a spring holds it closed. You should be able to see the tray's edges. If they aren't clear, then I'd suspect some mistake in installation like the bottom 4 screws not fully seated (?) or the front screws not in place. Another minor detail I noticed: the original unit had a tiny piece of self-adhesive plastic/nylon attached to the 'open' button as a wear preventer. I peeled it off the original and placed it on the new one - after the computer was shut off so the tray wouldn't open. - Peter