Outline Shader Issue 10-22-24

I am currently having trouble with my outline shader, it works for simple polys but when it comes to my main model it does this (it can be smaller or larger with the scale float but doesn’t stay as the outline). I was thinking it might have to do with unity separating my model into it’s respective polys from the fbx file, (I modeled and combined it in maya, then texture painted it in blender before sending it to unity), i have been having trouble with getting it to probuilderize though so if anyone has any suggestions or tips that would be great because although i have some ideas im not entirely sure what the issue is here. thank you.