We could analyze the shipping clerk's handwriting till midnight and not sure if we would crack it.
Have you run the handwriting on Slovenia's Facebook:https://www.facebook.com/groups/183735961660531/
Could the "ga" be TZA - W INTZA - sort of does sound like Vinica.
The shipping clerk wrote the location from a document that an ancestor would present so what did happen to the document once the ancestor was in America?
No church records in LDS-Family History Center for any of the locations in question?