[necrosect]

Sorry to double post but I think DaxMan has the same problem as well (hadn't noticed before).
I'm not sure if this is the standard way of doing it but I'd stick to using one of admins.cfg or admins_simple.ini to stop accidently assigning flags. Although in admin_groups.cfg you have correctly not assigned the "z" tag, you go on in admins.cfg to individually assign it to each of the admins which I think is giving you your problem