ViewModeSwitcher is installed by Default but can only change to any of the builtin zoom modes and as no zoom mode is removing the black bars ViewModeSwitcher does not work.
ViewModeSwitcher can do Black Bar cropping, it's enabled for SD content by default. It may be that it's detecting the content as being '16:9 inside 4:3' or '21:9 inside 16:9' - if this isn't doing enough cropping, disable those rules (untick the boxes in the first column - see http://wiki.team-mediaportal.com/1_...95_Plugins/ViewModeSwitcher#Advanced_Settings ), tick the 'Show Advance Settings' box and increase the 'MaxCrop limit (%)' to allow it to crop more of the 'good' picture (e.g. try 25% or 30%)