Problem with rotation in symmetrical actor

Hello

I have a rotation problem:

This is the skeleton i’m using:

I need to rotate the bone lowerarm_twist_01_r (which is attached to the hand_r) so that it always faces the elbow of the character mesh. Its a vr game so the hands has its own rotation which depends on the the 6DOF motion controllers.

This is the animation bp:

I’m setting that rotation in the character bp:

There are 2 actors, GraspingHandRight and GraspingHandLeft, they use the same mesh and skeleton. Up to this point everything works fine, here is a video (nevermind the twist on the arm, that is not relevant):

But in order for them to be symmetrical i’m applying a 1,1,-1 scale , which causes the problem, here is a video after applying the scale 1,1,-1:

As you can see the glove no longer looks at the elbow.

I tested many things, but i couldnt find a solution

please help

thanks