Cewolf - Vertical Bar Graph - Reduce Bar Width

Dear Experts,

Please excuse me if this question has been asked before. I could see similar posts , but those were posted sometime back.
Is there a way to reduce the width of bars in a bar graph.
I am using a vertical 3d bar graph with item labels. Below is the code

<jsp:useBean id="elecGraphView"  scope="request" class="com.abc.util.CeWolfExample"/>
					<cewolf:chart 
					    id="verticalbar3d" 
					    title="Electricity Consumption History" 
					    type="verticalbar3d" 
					    xaxislabel="Period" 
					    yaxislabel="KWH"
					    backgroundcolor="#FFFFFF"
					    plotbackgroundcolor="#EEFFE0">					    
					    <cewolf:data>
					        <cewolf:producer id="elecGraphView"/>					        	
					    </cewolf:data>
					    <cewolf:chartpostprocessor id="barRenderer">
					        <cewolf:param name="outline" value='<%="true"%>'/>	
					        <cewolf:param name="itemMargin" value='<%="0.1"%>'/>	
					       <cewolf:param name="showItemLabels" value='<%="true"%>'/>
						    <cewolf:param name="itemLabelColor" value='<%="#336699"%>' />
						    <cewolf:param name="itemLabelSize" value='<%="14"%>' />        		        
					    </cewolf:chartpostprocessor>
					     <cewolf:chartpostprocessor id="seriesPaint">
					        <cewolf:param name="0" value='<%="#66bc29"%>'/>		       
					    </cewolf:chartpostprocessor>					   
					</cewolf:chart>
					<p>
					<cewolf:img chartid="verticalbar3d" renderer="cewolf" width="800" height="300"/>

The Graph generated is attached as Graph1.jpg.

If I reduce the width of "img" to 500 i.e.
the bar width gets reduced, but the ItemLabels are not displayed and period values on x-axis get truncated(as shown in attachment Graph2.jpg). Is there a work around to reduce the width of bars and still display labels and complete x-axis period values(Eg: Mar 07 in my case).

Any help will be appreciated. Thanks in advance.

Regards,
Aman

Have you played with the itemMargin value of the BarRenderer postprocessor?

Thanks for a prompt reply. Yes,I was playing with itemMargin. After your response , I restored to the default itemMargin
The item labels did appear, but they seem to come only if there is a reasonable space between bars(See two attachments) which would depend on the bar length(y axis value). In Graph 1, the labels were not displayed. In Graph 2, the labels were displayed.

It did not help with the Months on x-axis as they still got truncated. Thanks for your help again.