I have the Sony 715 DVD recorder with 160gb HD. I started having a little problem. When i come to dub something from the HD to dvd, a c1300, dis is dirty error comes up.I know it is a good disc because I can take that very same disc & manually record from TV, or external source with no troubles, Sooo it's not the burner...?? IT is only finicky like this when going from HD to DVD. I have found the Prem. Taiyo yudens work a little better but they still do that above mentioned at times. Could erasing the HD & formatting it help?? I have done ALL the other things reset to factory defaults, unplug power cord overnight. It seems like a small glitch somewhere?? Any help or thoughts would be aprreciated. I DO NOT want to loose this machine, I love the DVD recorders with a hardrive.