downgrade from 9.2.1.7 to 9.2.0 because CIFS permissions

Hi, I'm thinking about downgrade, because of problems with setting policy access to CIFS shares. On version 9.2.0 i had no problems set these accesses (UNIX). After upgrade to 9.2.1.7 have problem with inheritance rights of the newly created directories and files as well as pre-defined access rights for "everyone" (i dont want default eccess for everyone on network).

Also, I can not find good tutorial or documentation for these changes on new freenas.

Worth the wait to a newer version or...

downgrade from 9.2.1.7 to 9.2.0 because CIFS permissions