I have a Motorola PVR Model DCT3416. Recently, I added a 1TB Expander. Prior to connecting the Expander, my PVR showed space used at 66%. Immediately after connecting the Expander, the space used showed as 0%. Since that time I have recorded more than 21 hours of HD TV. The space used still shows as 0%. Does anyone know how to "recalibrate" the PVR or Expander to show the proper amount of space used?