In v.6 I did not have this issue, but in v.7 I am unable to lock down the home page so Editors cannot make changes to the home page. If I remove all permissions for the Editors group and save, the permissions go back to defaults. If I give just Browse permission, Editors cannot save changes to the home page (content root) but the editing fields are still visible and allow typing in changes.

How do I remove all but browse from my root/home page?