I managed to accidently turn down the voice over volume and now when I select volume in the rotor the maximum I can get the voice over volume to is 35% meaning everything else is much louder than Voice Over. I've tried a hard reset, turning on and off, doing the power button six times and now I've just tried a full restore from an Icloud backup and it still has the issue. My next step will be to do a full reset using a new iTunes download of IOS7. Anyone have any thoughts. I'll call apple prior to doing the ITunes restore just in case and to make them aware.