preventing unnecessary namespace into xml
===

Im working on a project that modifies a kml file by adding gps coordinates on a specific spot in the kml. My code, however, is adding the "gx" namespace on **ALL** of the elements when its saved at the end. I have researched and looked at a ton of different Visual Basic XML writing methods and I've ran out of ideas. How do I stop unnecessary namespaces to be added?!

test.kml:

    <?xml version="1.0" encoding="utf-8" standalone="yes"?>
    <kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.opengis.net/kml/2.2">
      <Document>
        <name>test.kml</name>
        <Snippet>File Created Mon Jul 9 15:50:16 2012</Snippet>
        <Style id="multiTrack_n">
          <IconStyle>
            <Icon>
              <href>http://maps.google.com/mapfiles/kml/shapes/track.png</href>
            </Icon>
          </IconStyle>
          <LineStyle>
            <color>99ffac59</color>
            <width>6</width>
          </LineStyle>
        </Style>
        <Folder>
          <Placemark>
            <name>test.kml</name>
            <styleUrl>#multiTrack_n</styleUrl>
            <gx:Track>
              <!--GPS Tracking data Points-->
            </gx:Track>
          </Placemark>
        </Folder>
      </Document>
    </kml>


Code:

    Imports System.IO
    Imports System.Xml
    Imports System.DateTime
    Imports <xmlns="http://www.opengis.net/kml/2.2">
    Imports <xmlns:gx="http://www.opengis.net/kml/2.2">
    ...
    Public Sub addCoordinate(ByVal lon As Double, ByVal lat As Double, ByVal att As Double, ByVal timeStamp As String)
            Dim currentDoc = XDocument.Load("test.kml")
            Try
                whenElement = _
                    <when><%= timeStamp %></when>
                coordElement = _
                    <gx:coord><%= lon.ToString %>,<%= lat.ToString %>,<%= att.ToString %></gx:coord>
                Dim testLocation = currentDoc.<kml>.<Document>.<Folder>.<Placemark>.Elements.Last()
                testLocation.Add(whenElement)
                testlocation.Add(coordElement)
                currentDoc.Save("test.kml")
            Catch ex As Exception
                Console.WriteLine(ex)
            End Try
        End Sub

after code:

    <?xml version="1.0" encoding="utf-8" standalone="yes"?>
    <gx:kml xmlns="http://www.opengis.net/kml/2.2" xmlns:gx="http://www.opengis.net/kml/2.2">
      <gx:Document>
        <gx:name>test.kml</gx:name>
        <gx:Snippet>File Created Mon Jul 9 16:40:11 2012</gx:Snippet>
        <gx:Style id="multiTrack_n">
          <gx:IconStyle>
            <gx:Icon>
              <gx:href>http://maps.google.com/mapfiles/kml/shapes/track.png</gx:href>
            </gx:Icon>
          </gx:IconStyle>
          <gx:LineStyle>
            <gx:color>99ffac59</gx:color>
            <gx:width>6</gx:width>
          </gx:LineStyle>
        </gx:Style>
        <gx:Folder>
          <gx:name>test.kml</gx:name>
          <gx:Placemark>
            <gx:name>test</gx:name>
            <gx:styleUrl>#multiTrack_n</gx:styleUrl>
            <gx:Track>
              <!--GPS Tracking data Points-->
              <when xmlns="http://www.opengis.net/kml/2.2">2012-07-09T08:40:29Z</when>
              <gx:coord xmlns:gx="http://www.opengis.net/kml/2.2">0,0,0</gx:coord>
              <when xmlns="http://www.opengis.net/kml/2.2">2012-07-09T08:40:33Z</when>
              <gx:coord xmlns:gx="http://www.opengis.net/kml/2.2">0,0,0</gx:coord>
              <when xmlns="http://www.opengis.net/kml/2.2">2012-07-09T08:40:41Z</when>
              <gx:coord xmlns:gx="http://www.opengis.net/kml/2.2">0,0,0</gx:coord>
            </gx:Track>
          </gx:Placemark>
        </gx:Folder>
      </gx:Document>
    </gx:kml>