Problems regarding SVG to PDF conversion using FOP

Hi,
   I faced some problem while using Apache FOP Package to convert a SVG  
file into PDF file
I am able to convert some files perfectly but for some files the PDF i  
obtained is clipped.
I try to find out the solution and for that I make some changes in SVG.  
Changes are:

1. If I specify width and height 500% instead of 100% in the <svg> tag
  <svg width="500%" height="500%">
  then I get the full image in the PDF output.

2. If I specified the following value
<svg viewBox="0 0 1024 768">
to viewbox attribute then also I get the full pdf image but the size is  
too small.

Can anyone help me how to get rid of this problem I cant keep on changing  
every SVG file.




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