Wanting necklace to move with neck slider. {SOLVED}

Hi! I am wanting the middle part of my necklace (except for the charm) to move with the neck slider, so that it looks more natural and retains the base shape I made.
I've tried changing the weights of the clavicles, neck, spine1, but nothing is seemingly happening.

Package file

Blend File


Misc Info:

1. S4S version: 3.2.1.9 (STAR)
2. Blender version: 3.3.2
3. Issue: Middle Part of necklace not moving with neck.
4. Category: Necklace.


Thumbnail image:






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This is how it's supposed to look like:





And this is how it looks like in CAS:



Thank you in advance for whoever possibly ends up helping!