Once all the vertices are merged and you dont have any border edges where the seem is. Make sure your normals are all facing the same way if not go. Edit polygons>Normals>conform.
Than repeat what brian said
Edit polygons>Normals>Soft/Harden option box> select all soft> hit apply
That should do it.
I am enough of an artist to draw freely upon my imagination, knowledge is limited, imagination encircles the world. (Albert Einstein)
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