Add Instance with Scale Y set to -1 also flips normals

Hey @jjbravo I found something that would probably fix your issue without having to create new models with opposite normals. If you create a new material then go to the Material Graph and look in the details, you’ll see a checkbox called “Two Sided”. This is exactly what you’re looking for I think. It makes the renderer of this material ignore back face culling which just basically says that it will not make faces with normals facing away from the camera will still be rendered. It looks like this and is by default unchecked:

Make sure you leave it as “Opaque” though or it will look weird with the back rendered on top of the front. In my material I have it on Translucent but that’s just for the material I’m making, yours should be Opaque.
You may have already found a work around but I hope this makes things easier! Good luck!