Metahuman how to change skeleton of certain body part

Hi, so I have a very newbie question that I am struggling with for the past 30 minutes at least.

My metahuman character is almost fully built, the legs, feet, head and body are all in sync except for the torso.

I’ve narrowed the root of the problem to one particular difference but I do not understand how to change it to make it work.

This is the skeleton applied to the torso:
image

This is the skeleton applied to all other parts:
image

Unfortunately, I am not able to change the skeleton of the torso from the editor alone so I was thinking that an alternative would be to create a morph with a different skeleton but simply put I am just not sure how to do that

Does anyone know a fix to this? Thank you.