Hands modelled in Maya/ reversed normals on one

Hello, there is a thing that has made me lose my sleep.

I modelled, skin weighted, animated, 2 hands on maya. First modelled the right, then mirrored the left. Deleted history, froze transforms and started working on anims.

Anims were pretty straightforward, performed with controllers.

I imported them in Unity, but Unity keeps showing the left arm with reversed normals. I checked in maya, the Opposite attribute was off. Even went as far as to delete all history and start again. Normals reversed on the left hand again. Tried importing it alone. Normals reversed.

Why in God? Any help from anyone?

in the Import Settings there is a Normals section in there, play around there