Trying to fix the neck line

[Alumin]

I created a simple morph, if I use the file "Female Body.tri" the line on the neck becomes noticeable. I have injected in the source file "Female Body.nif" a link to "Female Body.tri" so that the vertexes completely coincide with the original, that is, the vertixes are not displaced by "BodySlide". 
It is likely that the line on the neck appears due to the impact of the file "Female Body.tri".
How can I open the file "Female Body.tri" and see the information in it? I tried using Try Extractor but it seems it can only be used for "head" files.
Is it even possible to use sliders in the game and not cover the character's neck with clothes??

The file "Female Body.tri" by its presence, either changes the position of the vertexes in the neck area, or changes the illumination of the body or does it all at once.?

 

The home clothes in the screenshot do not have a "*.tri" file for sliders.

Edited June 5, 2022 by Alumin

[Alumin]

Fixed the neck line in the traditional way?  Now I am not annoyed by the color change in the neck area.

[Derpaderpalerp]

That's awesome, it'd be even better if the face wasn't fugly af lol.