I just bought a bunch of Master System games in anticipation of my new Powerbase Mini arriving. But while handling my new copy of Shinobi I was surprised to see up inside the connector part of the cart that numerous copper connection plates (I don't know their real name) appear to be missing. My copies of Space Harrier, Alex Kidd in Miracle World, and Wonder Boy III have all the connector plates in place. But I also have a copy of Rastan that is also missing several plates.

Is this normal? Or are my games damaged? Its quite concerning. I won't be able to test any of them till the end of the week.