My 411 receiver is forcing me to enter the password for the digital sub-channels that carry weather, traffic, etc, eg. in my area 4-02, 5-02, 8-02, etc. The main OTA channels, like 4-01 are included in the on-screen program guide with ratings that don't trigger the locks, but the -02 channels just show up as "digital service" in the guide, with a "NR/AO" rating, i.e. the same rating as the stuff that I really don't want my kids to watch. Is there some way to turn the locks off for the OTA digital subs without unlocking the whole system?