I compared the default 1680x1050 with my character's current uisettings file. The default pre-defines 6 hotbars. Here's what the first one looks like:
Code:
<Window Name="Hotkey_clone_0" alignment="5" alignment_offset="85,-20" backdrop_mo_o="0" backdrop_n_o="0" foreground_mo_o="1" foreground_n_o="1" frame_mo_o="0" frame_n_o="0" locked="true" size="396,32" visible="true" window_style="0">
<Properties allow_dragging="true" bank="3" clone_version="4" icon_padding="0" icon_size="32" keymapping="3" reverse_spinner="false" show_outline="false" show_text="true" spinner="false" version="6" />
</Window>
If I read your message correctly, you could fix your problem by adding presets to the default for the other 4 bars and set 'visible="false"' for them.
It might be easier to set the hotbars as you want them on the small monitor and save that uisettings file separately, rather than tinker with the defaults.
-= Therendil =-