Set-up is Tivo Premiere W/1TB WD DVR expander on Cox HD with M card. Experienced some severe pixelation issues and ran kickstart 54 which reported no issues with either hard drive. I noticed several recordings on the HD History channel that stopped well short of the program end time e.g., 30 minute show stops recording after 5-10 minutes? System has plenty of HD space left. Any suggestions as to what problem might be and/ or how to diagnose? Thanks for any help.