HierarchicalDataTemplate Second Level not showing.

I have been fighting this thing for too long now.  I am just not getting this apparently.  Can someone tell me what I am doing wrong with the xaml that is causing the second level to not show.

Here is the code.

XAML

<TreeView Margin="0,0,0,0" ItemsSource="{Binding Path=Configuration.Servers}"><TreeView.ItemTemplate><HierarchicalDataTemplate ItemsSource="{Binding Path=Reports}" DataType="{x:Type utils:CMSServer}"><TextBlock Text="{Binding Path=Name}"/><HierarchicalDataTemplate.ItemTemplate><DataTemplate DataType="{x:Type utils:CMSReport}"><TextBlock Text="{Binding Path=Name}"/></DataTemplate></HierarchicalDataTemplate.ItemTemplate></HierarchicalDataTemplate></TreeView.ItemTemplate></TreeView>

Here is the underlying class

C#:

public class ConfigViewClass
    {
        private ObservableCollection<CMSServer> _servers;
        private string _key;

        public ConfigViewClass ()
        {
            _servers = new ObservableCollection<CMSServer>();
        }//constructor

        public ObservableCollection<CMSServer> Servers
        {
            get { return _servers; }
            set
            {
                _servers = value;
            }
        }

        public string Key
        {
            get { return _key; }
            set
            {
                _key = value;
            }
        }

        
    }//Configuration View

    public class CMSServer
    {
        public ObservableCollection<CMSReport> Reports { get; set; }
        public string Name { get; set; }


        public CMSServer ()
        {
            Reports = new ObservableCollection<CMSReport>();
        }//constructor

        
    }//CMS Server Class

    public class CMSReport
    {
        public string Name { get; set; }
        
        public CMSReport ()
        {
            
        }
        
    }//CMS Reports

Greatly appreciate someone pointing out, what is sure to be a stupid mistake, for me.