Here's a thought which should solve it but probably involves a bit of a head "foray" for you if you've not done mesh creation before.
Why not construct a single mesh out of the tiles by using the mesh/surface/vertice command set. That way you will end up with one smooth mesh.
Another option might be to disable lighting on the object and use a texture layer to alpha on a light map created with the good old plot command.
Why not construct a single mesh out of the tiles by using the mesh/surface/vertice command set. That way you will end up with one smooth mesh.
Another option might be to disable lighting on the object and use a texture layer to alpha on a light map created with the good old plot command.