Motor6D Issues? Or something else?

So I want to animate some custom characters I've made in studio and I've used my Motor6D placement correctly but for some reason when I try to animate everything is ok but ONE thing.

When I try to rotate a part instead of rotating on its axis or joint axis it rotates in a big circle

Here is the pic of custom characters and the the character on the right is the one im testing on and the window on the right is its hierarchy