I need a foolproof way to tell if an American NES cart has the Famicom adapter in it without taking it apart first. I've read several articles online that mention things like "make sure it doesn't say "Rev A"" and "it weighs more than a standard cart." Both of these methods are unreliable at best. Is there any absolutely foolproof, works-every-time method? I really want to play these Famicom games, but I'm not going to buy an aftermarket adapter. Any ideas greatly appreciated!