Can anyone using the Dish 5000 + 8VSB modulator to record hbo/showtime help me? I'm feeding the modulator output to a MyHD MDP-100 card, and recording from there. On later playback, content recorded from HBO and showtime stutter and pixellate every few seconds, basically making the stream unwatchable. I recorded a HD-PPV movie and that played back fine. Anyone knows if the HBO/Showtime streams are any different?