netgem netbox skip problem

Hi guys I have this profile for netgem netbox It workes great the only small problem is when it is transcoding it does not skip fw smoothly and also does not skip back at all, is there anything I could change to make it work .
<Profile id="8000" name="Netgem Netbox " extendsProfileId="1">
<Detection>
<HttpHeaders>
<X-AV-Client-Info>.*8000.*</X-AV-Client-Info>
</HttpHeaders>
<UPnPSearch>
<ModelName> 8000 </ModelName>
</UPnPSearch>
</Detection>
<Transcoding>
<Video targetContainer="mpegts" targetACodec="ac3">
<Matches container="*" aCodec="dca" />
</Video>
</Transcoding>
</Profile>
<Profile id="8000" name="Netgem Netbox " extendsProfileId="1">
<Detection>
<HttpHeaders>
<X-AV-Client-Info>.*8000.*</X-AV-Client-Info>
</HttpHeaders>
<UPnPSearch>
<ModelName> 8000 </ModelName>
</UPnPSearch>
</Detection>
<Transcoding>
<Video targetContainer="mpegts" targetACodec="ac3">
<Matches container="*" aCodec="dca" />
</Video>
</Transcoding>
</Profile>