@ddrennen2QDK2 : I do not think there is a linear scale between NAD83 and UTM12N. I think you need to use a coordinate transformation. Most of Forma currently uses proj for this and I’ve previously written about how to use it in Dynamo.
@zachri.jensen : has there been any conversations around exposing a coordinate projection node in the Civil 3D dynamo package? Would be interesting to have access to the functions built into Civil 3D. That would make these issues easier to deal with and more robust for the future.