Oh and I edited post #3 with this info.
I Saw a tutorial on Nasioc where a strip of sandpaper was used in place of the screwdrivers to get the green film off. I haven't tryed this method but it seemed to work well. I would only be worried about scraping off too much of the black and thus making 'hot spots'. I just thought that I would throw that out if the screwdrivers don't work for you.