Invisible weight paint?

Hey guys, I’m making this model and so far the rigging went pretty well except for this

As you can see, the whole mouth (and the inside of the mouth too) move with the shoulder bone. Issue is, i checked every single bone related to the shoulders, arms, etc and there is zero trace of any weight paint on this part of the face which would cause this issue. Is there some hidden bones that I’m not aware of?

Thanks in advance as always!

Hi, there are no hidden bones sometime the weight is there but very faint so its hard to see it.
If you can link the file we will be able to check it for you? You can delete any other object and keep the file to minimum.

here you go:

Yes as i have suspected very fade weight on the mouth from L_shoulder.

ohh shoot i didn’t see that bone haha

thanks a lot!!

by the way, sorry for asking but what do you think of the model overall?

The only way to know is to complete the rigging and weights, then try to pose the character and animate a few steps forward to make sure nothing is left behind/detached.