I have a Panasonic DMR-E80H. I was wondering if I record to the HHD at SP speed can I then record to a disc using the High Speed function at LP speed? I tried to record a program that was 2 1/2 hours long to disc, however, when trying to used High Speed I get the error "Not enough space on disc". I then have to record to disc using the LP mode and am not able to use High Speed.