I have a feeling that the EPG doesn't know which programs are first-runs or repeats. Channel 9 screens 2 eps of Criminal Minds on Wed night. A first-run at 8:30 and a repeat at 9:30. I created a season pass with first-run only and it records both eps.

I had a look around the guide at different shows and none of them indicated first-run or repeat. Does the EPG contain that info? If not, the first-run only option is useless.