Sony MBR-XB100 headphones, recabling

Hi, I am in the process of changing my MDR-XB1000 to dual removable cables. My current obstacle is how to remove curent cable from the small barrow/cylinder that it comes out of and second, how to secure the new jack into the small barrow(where the cable used to exit). Thanks to anyone for help.

Pictures might help advice

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Hi, here is a video(similar to what I wish to do). The video starts with the cables already removed and he does not specify how he secured the jack socket into the headphone part where the origional cables exited.


The knurled barrel shaped part is removable but it has an internal device/contraption that grips the cable. I can not figure how to remove it other than with brute force.
After the cables have been removed, i need to solve how I will secure the new jack sockets(I have determined that they will fit in the hole). The knurled barrel is thin lighweight metal and can not be tapped.

My only idea is to use hot melt glue that could(for future repair) be remelted.
A user, [Langotriel] posted about a similar mod to these phones in 2015, but I do not know how to contact him(was hoping he might see my posting!).
Cheers

Missing video from prev posting:

Hot glue / other adhesive