Custom Hand Issues

[raiwind]

I'm having issues using custom hand models.

After setting the prefabs in the "override hand models for Oculus SDK", I don't know how to set the orientation of the hand models (tried changing the orientation of the prefabs to no avail) and everytime I press grab in playmode, a second custom hand appears, so I got two right hands while holding the grab button. I tried to set up a collider as a child game object on trigger, but suddenly I had three hands and the collider were not on trigger.

Is there any documentation or tutorial for setting up custom hands?

Edit: The double hand model appears (independently if it's a custom model or not) if I turn OFF "Automatically Set Controller Transparency" when I press the grab button for colliding with objects, one hand behaves correctly as a collider while the other hand goes through the colliding object.

Edit (2): If I leave "Automatically Set Controller Transparency" ON by default, I'm still getting double hands when using custom hands.