Marmoset Viewer Wireframe Transparent

corinne_10x

Hey guys,
I'm trying to create a Marmoset Viewer, but the wireframe portion of it is transparent when I did a preview. I checked a few other models and their's show the wireframe on top of a standard white material. Does anyone know how to fix it?
I've tried using an fbx and an obj and both have the same result.

Thanks

corinne_10x

Turns out my FOV was too low