Need a quick lesson from you Pros. I have a 1080p TV. Up until my Roamio, I've been using a standard def box from Comcast with a Series 2 TiVo. Never jumped to an HD box because I didn't want to have to use IR blaster with my Series 2 and HD box. My standard def box had a serial port or whatever it was called and changed channels perfectly. I once looked at an HD box and it didn't have that port so I kept my standard def box. On to my question. My Roamio Plus auto select wants to set my output at 1080i. I know for sure my TV is a 1080p. Should I force it or does my Roamio know best? Again, I'm new to Hi-Def settings other than my Blu-Ray player. Thanks in advance and loving my Roamio so far.