Retargeting animation sometimes rotates model

[FuzzyWobble]

Hello. I am trying to retarget mixamo animations from a master avatar to multiple other avatars. It works most of the time, then on some models, it rotates them about X. The models are the same scale as the master (exactly) and are in the same t-pose. No matter what I try I cannot seem to get consistent results. Anyone encounter this or have any suggestions?