Sync Services and AD LDS

I'm hoping someone has some advice or experience in setting up the AD LDS connector within Sync.  I have confirmed that tthe permissions and access is correct as i can connect with ADSI Edit to the naming context but when trying to setup the server name/port on the connector, it is erroring .  Error : The specified directory service attribute or value does not exist.    I think it's because i'm not specifying the naming for this instance (dc=Name,DC=com) but i can't find where that should be listed.  The Administration Guide  simply says to put in the FQDN of the server with the port.

any help would be appreciated.