Hand Prefab and Interaction Hands

So I initially followed the guide for hand tracking and set up the hand with the OVRHandPrefab under each hand anchors. 

I then followed the interaction guide which added the interaction hands into the scene. I set the left and right hands up in the same way. However, only one hand is coming up as part of the OVRinteraction as shown in the image. Not sure what I've done wrong tbh. 

Left - has black hand from initial setup and interaction hand.

Right - has only black hand.