[FaxingMars]

Hi, after leaving my ATH M50s in a bag for a while, they have lost their isolation, and sit very loose on my head. The tops of the drivers at the pivot push fairly weakly into my head, and the bottom is pushed out, away from my ear. I have tried stretching and squashing them, but they don't sit right any more.
 
maybe pictures can explain it better than I can:
 
http://imgur.com/a/DQRdH
 
Is there anything I can do to fix this, or is the pivot broken? Thanks

 

[FaxingMars]

I've just noticed there is snapped plastic on the hinge.
 
http://imgur.com/33gU1gT
 
Does anyone know what this was, and can I replace it? Thanks.