Roadblock shading fix?

[Impossible343]

I'm trying to fix Wham's Roadblock replica's shading issue(the wedge front looks really dark under light but looks brighter when facing away from light) by tweaking material values in the GMF, but no matter what values i try and change, nothing seems to happen. Is there a known fix for these such shading issues or am i going to have to keep searching through the GMF?

[Jaydee99]

Does it have a bmp? If so, have you tried skinning it?

[I Like Tacos]

It sounds like the mesh normals are backwards. If you know how to work with tm_row stuff, just rotate them 180 degrees.

[Impossible343]

I've tried rotating the mesh 180 degrees but nothing seems to change.