Quoted from jgentry:They don't provide manuals or score cards for any of their games and it's not a secret. They market mostly to collectors so no need for coin boxes but they have always been helpful when someone let's them know before hand that the game will be used on route.
Why would you not just print the stuff your dad needs? Problem solved. If you have 200 games and do restores you have extra coin boxes laying around. Second problem solved.
His dad is 83 and has bought many nib games in his life so I guess he is the most qualified to tell us pinball machine are more and more expensive and gets less and less stuff in the same time. Maybe he is fed up with that statement.