Mixamo Retarget Causes Player to Shoot Themselves?

Reference Video: That's not how you should fire a pistol... - YouTube

Having a problem with using Mixamo Retarget. Everything is fine until the player goes to shoot, and then he flips the gun around on himself and fires. Comical, but not very realistic.

I’ve examined the bones, and “hand_r” does not seem to flip or rotate at all. Lower and upper arms are also perfectly fine. I examined the UE mannequin and it’s rotation/location values are very close to the animation’s rotation/location. No flipped negative signs or marginal values.

Any help would be great. I really don’t want to map out these animations on my own with the pluthera of stuff I need to accomplish.