is there a list of NES carts that were printed with the 5-screw casing, as well as a list of games that had both 3-screw and 5-screw variations. To my surprise, my copies of old NES games like Golf and Mega Man had the newer 3-screw casing, which leads me to believe there were multiple printings. it sounds like a minor quibble, but i figure people on this site are hardcore enough to give a dam like myself :P