Hinge or Hinge Pin Bracket replacement beats studio

Hello,

I need to replace my Hinge or just the Hinge Pin Bracket of my beats studio.

To clarify the pin bracket is this part:

http://s3.postimg.org/jjfwafolf/beats.jp...

Does anybody now how to do it? I have been able to open the right part of the headset, but now I am stack as to replace either the hinge or part of it I should unsolder the wires and if it is possible I would avoid it.

I looked at the Beats Studio 2.0 Exploratory Teardown guide already to search for hints but I did not find anything.

Thank you very much