M3 Advance lever doesn't lock after changing the frame - Help!

[tidefilm]

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Hello everyone! I have aquired an M3, which so far looks allright to me, some bigger dents, shutter sounds like a charm,

viever is bright and clear, but there is one issue that maybe you can help me.

 

The strange thing is about the advance lever, I recognized when using it.

Having forgotten if I advanced it allready after taking a picture or not I advanced it and it moved but it was allready strained.

The lever seems to not get into the fix position after straining and still moves on in a loose way.

 

I have a short video I just made with my phone right here: https://www.dropbox.com/s/f6emlz6nmzpe43j/IMG_0215.MOV?dl=0

 

Does anybody know where this could come from? And if this is something serious to care about? I d love to fix it but don t

have the budget if this would be expersive. I never saw something like this on a film m.

 

Thanks a lot in advance, best regards Christian