I have a similar non theme problem I asked about in the Wordpress forum. While I’ve used the first code below at a bunch of different widths, somebody in that forum suggested I change to a absolute pixel width to cure the problem related to my ASUS tablet which cut things off at the right, but only on pages that had a wide image, that yes, was within the limites of 990 pixels which is the default for the Razor theme if I’m not mistaken.
Now using the 2nd option below doesn’t cut things off anymore, but the pages look confined due to too little width on most desktop monitors for my tastes.
The curious thing is all the higher resolution desktop monitors I’ve checked my site out on AND the ASUS table are running at the same resolution (1920×1200) and the tablet before changing to a absolute pixel width showed the site correctly with nothing cut off if you rotated the tablet so it was in portrait mode, which to me makes no senses since that’s the more narrow width, with the problem only showing up in landscape mode. Oh well, for what it’s worth.
.pageWrapper, .top_menu_bar { width: 64% !important; }
.pageWrapper, .top_menu_bar { width: 1130px !important; }