Layout Size Calculation Problem

Hello Team,

as per a last post, I used functions.php to change the size of the content. I want the page to take the real fullsize if no sidebar is selected though.

So I tried everything to modify and even ended up with

$avia_config['layout']['fullsize'] 		= array('content' => 'twelve');
$avia_config['layout']['sidebar_left'] 	= array('content' => 'nine', 		 'sidebar' => 'three alpha' ,'meta' => 'two alpha', 'entry' => 'nine');
$avia_config['layout']['sidebar_right'] = array('content' => 'ten alpha',   'sidebar' => 'two alpha', 'meta' => 'two alpha', 'entry' => 'ten alpha');

But my Thema still has an ungly border on the left side

http://www.behrmannhaertel.de/Kaesler/portfolio/

What am I doing wrong?