I’ve been having an issue with the way that area near the shoulder of my model is bending.
The source of the problem seems to stem from the way that the bone closest to the shoulder is Weight Painted.
Noticeably, the bone isn’t symmetrically painted on the upper and lower area in the same manner. In contrast, a bone further down the link has its vertices much more evenly painted, although its not quite symmetrical.
In further contrast, this screenshot of an older version of this model without this problem shows the same bone is painted evenly on the both the top and the bottom.
I have absolutely no idea why the bone is no longer symmetrically painted, and I don’t know how to revert it back to its proper state. I tried using the Assign Automatic from Bones option from the Specials menu, but it only seems to make things worse.
Is there any possible way to repaint the bone in a way that evenly distributed along the top and bottom?