My story is that I had a drive go bad on me and I replaced it by getting a weeknees image onto 200gb drive. I now have tivo up and running but I get stutter on video playback. Also if I pause live tivo and go into menus and then return after a few minutes and hit play I see alot of pixelation in the video. I wonder if it's a heat issue. The box is running at 40C but tivo reports that is normal temperature. The fan is working on the unit. Any help appreciated.