Quote - Yea, the normals are all inconsistent.  I opened in Blender, showed Normals, then recalculated outside, and a bunch of 'em changed, and a bunch stayed the same.

Do you know if there is a recalculate normals for all parts of an OBJ, after import into Blender?   ...or do I need to select each one at a time and recalculate.

Usually I press tab to go in edit mode, press A to select all parts of the mesh and then recalculate the normals. If the OBJ has several group then you need to repeat the process for each group.

This operation should have been done by the original modeler.

Cheers.

Paolo

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