Sequential recordings take 2 tuners due to record after (1 Viewer)

[Goldmember]

Suppose I progam Myth Busters with a lead-in of 7 minutes and a lead-out of 10 minutes. One day, Discovery broadcasts 2 shows. Mediaportal uses 2 tuners during the overlap of the lead-in of the second show. Mediacenter of Microsoft detects that the shows connect and ignores the lead-in/out because you will be able to see it anyway. Is there a setting I can use to do this?