Public Folder Rights Exchange 2007

I can only modify and add sub folders to my existing public folders logged in as the Administrator on my server.  The Administrator is a member of the Enterprise Server Groups and that group seems to be the only group that will allow such modifications to public folders..

How can i get other users to have owner style permissions under all public folders without making them a part of the Enterprise Admins group?

I have added all other users to the Exchange Public Folder Admin Group
I have added all other users to the PUblic Folders Admin group.
I have also run the following commands below on one test user but i still cannot add any sub folders under existing public folders.

(Add-PublicFolderAdministrativePermission -Identity "\Project Communication" -User "JSmith" -AccessRights AllExtendedRights -Inheritance All)
(Add-PublicFolderAdministrativePermission -Identity "\Project Communication" -User "JSmith" -AccessRights AllExtendedRights -InheritanceType SelfAndChildren)

Error Message:
"Cannot Create the Folder.  You do not have sufficient permission to perform this operation on this object.  See the folder contact or your system administrator."