Topic: Please help identify these loose parts from inside wii

I just bought a used wii console. There was something loose inside the console so I took it apart. I found three identical black plastic pieces (about 3/8" long, 1/4" wide) in the shape of Z, but where the diagonal line is vertical (so there are two right angles in the piece).

The console also has a problem loading discs. It often takes a new disc, then partially ejects it, then takes it in more, and then ejects it completely. Sometimes, it does load the disc correctly.

I don't know if the loose parts are related to the disc loading problem.

Here's the link to the photo of the three black plastic pieces:
https://drive.google.com/file/d/1HA_JBiNcKil9ssrGJ3H2t5K3jIxt...

Thank you!
Tom