Windows Service Account vs. Linux root

I've successfully JOINed a linux server to our companies Active Directory.    I used a special Windows Service Account for the vastool join command.

Now I'm trying to configure SAMBA but it wants to use the local root password to join.

How do I get vasd and SAMBA to work together with two administrator accounts.

All I want to do is to allow users to authenticate through vasd when a users maps a samba share.