Tvheadend

I'm accessing the Sky NZ EPG using the OpenTV NZ plugin. It appears to only get 1 weeks worth of data from the stream, but the official box can get 14 days worth. Is there a limit that I have missed as a setting, or is this a hardcoded issue? As a note, EPGCollector on windows get 14 days as well as the MediaPortal SkyTV plugin.

Any thoughts or comments?

Thanks,

Chris