DocBook colwidth Problems

[Ray Miller <ray.miller@nist.gov>]

Current version of oXygen on JDK15; Fedora2 platform.
Docbook DTD is 4.4b2
XSL is 1.67.2
Transformer is Saxon 6.5.3

 <table width="1224" border="0" cellpadding="0" cellspacing="0">
    <title>Test table</title>
       <tgroup cols="3">
          <colspec colwidth="796" colnum="1" colname="c1"/>
          <colspec colwidth="74" colnum="2" colname="c2"/>
          <colspec colwidth="354" colnum="3" colname="c3"/>
          <spanspec namest="c1" nameend="c2" spanname="s1"/>
          <tbody>
     <row valign="top">
               <entry spanname="s1"><para>cols 1 and 2</para></entry>
               <entry><para>col 3</para></entry>
           </row>
         </tbody>
      </tgroup>         
   </table>

The colwidth attribute does not function; cannot create a DocBook rendering of 
an OpenOffice text document. 

Similiar problems transforming with xsltproc

Help please.

Ray