Marshall Major II headphones replacement

This is a replacement for the Marshall Major II part that easily breaks.
The steps for mounting it are as follows:
First take apart the two parts that form the original hinge(this may require quite a lot of pressure, but don't worry about breaking it, although you are going to need the small one that has two rubber pieces, it is not likely that it breaks). Then put the metal frame that holds the headphone in the printed part and mount the small piece aforementioned as it was on the original hi