Strange sharp lines/noticeable seams I was making a model for a game, and I finished and had a look at the model. With shading turned to smooth, I noticed there were some strange lines along certain edges. I can't find anything close to this happening with anyone else. If i try to delete the vertices and remodel that same place they still appear. All of the vertices are connected to each other, and there's no duplicates or unused ones.
I wonder if the normals are inverted on them.
viewport overlays can help identify this (top right of the viewport, looks like 2 circles intersecting) select face orientation. should all be blue