Trouble with NonLinearity gauge

Hi !It's been a long time we try to develop a gauge using ACES RESOURCES EDITOR, and we are stoped because we don't success to display correctly our heading in the center of our element. If someone can test our gauge and help us, it will help us to advance.The code :

<?xml version="1.0" encoding="UTF-8"?><SimBase.Document    	Type="AceXML"    	version="1,0"    	id="horizon_artificielle">	<Descr>AceXML Document</Descr>	<Filename>horizon_artificielle.xml</Filename>	<SimGauge.Gauge id="horizon_artificielle" ArtDirectory="C:\TestGauges">    	<FloatPosition>0.000,0.000</FloatPosition>    	<Size>200,200</Size>    	<Image id="horizon.bmp" Name="horizon.bmp">        	<Transparent>True</Transparent>    	</Image>    	<Element id="zone_texte_IAS">        	<FloatPosition>5.000,2.000</FloatPosition>        	<GaugeText id="IAS">            	<Bold>True</Bold>            	<FontColor>green</FontColor>            	<FontHeight>20</FontHeight>            	<GaugeString>%((A:AIRSPEED TRUE, knots))%!0d!</GaugeString>            	<Length>4</Length>            	<Size>40,20</Size>            	<Transparent>True</Transparent>            	<VerticalAlign>CENTER</VerticalAlign>        	</GaugeText>    	</Element>    	<Element id="zone_texte_FL">        	<FloatPosition>150.000,2.000</FloatPosition>        	<GaugeText id="FL">            	<Bold>True</Bold>            	<FontColor>green</FontColor>            	<FontHeight>20</FontHeight>            	<GaugeString>%((A:PLANE ALTITUDE, feet))%!0d!</GaugeString>            	<Length>5</Length>            	<Size>110,20</Size>            	<Transparent>True</Transparent>            	<VerticalAlign>CENTER</VerticalAlign>        	</GaugeText>    	</Element>    	<Element id="zone_texte_QNH">        	<FloatPosition>140.000,155.000</FloatPosition>        	<GaugeText id="QNH">            	<Bold>True</Bold>            	<FontColor>green</FontColor>            	<FontHeight>16</FontHeight>            	<GaugeString>%((A:KOHLSMAN SETTING MB, millibars))%!0.2d!</GaugeString>            	<Size>75,16</Size>            	<Transparent>True</Transparent>            	<VerticalAlign>CENTER</VerticalAlign>        	</GaugeText>    	</Element>    	<Element id="Element">        	<FloatPosition>65.000,2.000</FloatPosition>        	<Element id="Element">            	<FloatPosition>0.000,0.000</FloatPosition>            	<Image id="echelle.bmp" Name="echelle.bmp">                	<Transparent>True</Transparent>            	</Image>            	<Shift id="Shift">                	<Expression id="(A:PLANE HEADING DEGREES GYRO, degrees) dnor">                    	<script>(A:PLANE HEADING DEGREES GYRO, degrees) dnor</Script>                	</Expression>                	<NonlinearityTable id="NonlinearityTable">                    	<NonlinearityEntry id="NonlinearityEntry1">                        	<ExpressionResult>0.000</ExpressionResult>                        	<FloatPosition>0.000,0.000</FloatPosition>                    	</NonlinearityEntry>                    	<NonlinearityEntry id="NonlinearityEntry2">                        	<ExpressionResult>180.000</ExpressionResult>                        	<FloatPosition>-360.000,0.000</FloatPosition>                    	</NonlinearityEntry>                    	<NonlinearityEntry id="NonlinearityEntry3">                        	<ExpressionResult>360.000</ExpressionResult>                        	<FloatPosition>-720.000,0.000</FloatPosition>                    	</NonlinearityEntry>                	</NonlinearityTable>            	</Shift>            	<ClipRect id="ClipRect">                	<FloatPosition>0.000,0.000</FloatPosition>                	<Size>50,13</Size>            	</ClipRect>        	</Element>    	</Element>	</SimGauge.Gauge></SimBase.Document>

BMP file : echelle.bmpThx in advance !