C-51 Reed part?

[xl130]

Hi all,

Trying to figure out where this small plastic wedge is supposed to go.

I was prying the reed block off of my C-51. This small black plastic wedge went flying across the room. I’m trying to figure out we’re the heck it is supposed to go...

The IPL appears to show a similar part that would go directly below the reed. Can anyone confirm this? Thanks

[xl130]

It’s PN58933. It does go into the area that I suspected.