[ubuntu] SMB wrong permission copying folder

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http://ubuntuforums.org – Hi at all I need help. I installed a new Ubuntu server with SMB packets. I configured it with some users and some group. I configured some folder for different acces depending on groups. I configured SMB to create folders only with 0770 permission with parameters create mask = 0770 and directory mask = 0770 When I create e new folder, all have right permission. When I copy folder from different folders or from windows client, permission is 0750 and folder is not accessible from other group users. It happen only when i copy folders. I need that SMB create/copy folders only with 0770 permissio (Hardware)