Hi! A little info for people who may enconter the same problem that I posted in that last post I made, but i never posted
You can fix the model (in Blender) by going in to edit mode, press A to select all vertex, then go to the "Edges" menu and select "Clear sharp" then go to the "Mesh" menu then "Normals" and select "Reset vectors".
This works with the .obj from other Leo's tools.
Once again thanks for this tools Leo