About conversion from SMPLX to humanoid format

[Fishman-York]

Hi, I have a dataset that uses SMPLX format.
What I've done so far is:
root_position = transl (3)
root_orientation = global_orient (1,3,3)
And the other joints I get from the body pose field (21, 3, 3).
Chest = body_pose[8]
Neck = body_pose[11]
Right Hip = body_pose[1]
Right knee = body_pose[4]
Right ankle = body_pose[7]
Right shoulder = body_pose[16]
Right Elbow = body_pose[18]
Left Hip = body_pose[0]
Left Knee = body_pose[3]
Left Ankle = body_pose[6]
Left Shoulder = body_pose[15]
Left Elbow =body_pose[17]
I converted all the joints to quaternions, except the revolute joints which i converted to axis angles and then took the dimension with the biggest change.
However, I can't seem to get the rotations to work right. I was wondering if I was doing anything wrong?