How to align right sidebar with edge of header image
 

I've used Atahualpa for several sites and have not noticed this happening before. I want the right hand edge of the sidebar - so the title bar for each widget - to align with the edge of the header image. At the moment it looks like the widgets are indented.

Any way I can increase the width of the widget header box to match up, widthways?

The site is at http://www.pleasemindthegap.info/

The sidebare are part of the center area and the header image is part of the header

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