I picked up a cart of Gyromite today because it was $2.50 (though I later realized I already owned one :lol ). It was slightly heavier than the rest of the hundred or so NES games at the store, and it was one of the five screw cases, PLUS the screws were actually for a flat-headed screwdriver, unlike the security bit ones I normally see. Anyways, I bought it, took it home, and opened it up. I don't remember or know which direction everything is supposed to go in.
The side with the NES-JOINT-01 or whatever is supposed to go in which direction with the famicom cart and also inside the system? I don't know, and I don't want to try sticking a cart in the wrong way.