[Samba] Unix permissions

[Andy Smith]

Hi all, 

  If I want to use a server as a stand alone without Winbind etc in
theory this is very simple, however in practice I see such issues as, I
cannot modify permission from the client and standard file permissions
are ignored and superceeded by Linux file ACLs. Without changing the
whole config to a DC/domain (which I know is considered the normal
install) can I resolve either or both of these issues? 

To illustrate the ACL issue, when a user has created a file the Unix
permisions are 770 where group is projectes, however users in projects
only receive read access when accessing the file via samba, which I
assume is due to the acl on the file: 

# file: resumenCertificacionesSO_4.xlsx
# owner: amoyano
# group: projectes
user::rwx
user:amoyano:rwx
group::r--
group:staff:r--
mask::rwx
other::r-- 

Can I have Samba use only standard Unix permissions and ignore the ACL?
NT ACL option looks like it completely disables file permission support
so isnt what Im after. 

Thanks for any help, Andy.