Question: Little Piece Broken on Leica M6

[K57H639]

Greetings.

I recently acquired a previously-owned Leica M6 TTL.

There are those two little nubs at the top of the film door, and I noticed that part of one of the nubs is broken off on mine.... I'm not sure what purpose these nubs serve, so I'm not sure if the missing piece actually matters... Could someone please tell me what they are and if the missing piece is something to worry about?

I assume the nubs are to catch on the topplate of the Leica when the door is open, but I just want to varify.


Here's a photo of what I'm talking about:

http://img249.imageshack.us/img249/2901/33604830ms4.jpg

Thanks.

 

[K57H639]

Alright, thanks for the help.