I finally got an Atari 7800 for Christmas this year, and save for only two of my 28 games, all is well.

However, these two are both Atari 7800 games; ALL of my 2600 games are fine.

The issue: when I put in Atari games, they "click" into place and work fine. This includes one of my two Pole Position II's. However, when I put either (the other) Pole Position II or my Donkey Kong Jr. into the console, it "squishes" into place and it is incredibly difficult to find the right distance in to make them work.

Is there an explanation as to why these two (but not the rest) would do this? And, if so, how can I fix it?