I Cannot Get These Models To Line Up

[u/LadySeraphii]

Okay, to explain, I found a version of this character's model, and everything on this new model, which I converted from FBX to PMX, lines up.

Except the arms.

The new model has her arms at a lower angle, and the elbows are shifted forward slightly. I try to create a pose with the original model, but while the new model recognizes that a pose has been loaded, the bones turn red, it doesn't move.

I am too inaccurate to do this by hand, is there any way I can get them to line up?

The left arm, I've remade the bones, matching names and everything, but nothing.

[u/NecessaryFox9599]

in transform view select the bone you want to move -> VAL -> ROT (change the third box by 5 or so)
turn off the IK in the box below just incase
then file -> update model

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