pivot points between animations shifting around

I've been struggeling with this ever since 4.3.



The idle_front and idle_side are fine, but other animations seem to shift around a lot.
Somehow this only happens when shifting animations. The slash animation sizes are all different in size, but somehow they all align perfectly.

I'm using texture and it's extension, and tried all of the different trim modes, but they all yield the same result.

I know I could shift the pivot points around manually, but then I would lose the perfect pivot point for each animation.
I'd almost want to shift around the position of each animation, if that makes any sense.

Any ideas on this, or am I doomed to do the pivot points manually?