Try setting up another channel to record at the same time first, then program the channel to record Deadliest Catch, see if it forces it to tuner #1 instead of tuner #2.
It sounds like there might be a problem with your Tuner #2. Can you record other programs off the same channel on tuner #2?
It sounds like there might be a problem with your Tuner #2. Can you record other programs off the same channel on tuner #2?