I've given up on using the entire system that comes with the trailer. A Dish tech said that the stock wiring isn't right for satellite signals, although surely it's RG6, so that doesn't seem right. Anyway, I run RG6 from my Tailgater directly into the trailer and into my receiver. From there it's HDMI to the two HDTVs. A little creative maneuvering and you don't notice the cable run.
I can't stand watching SD on a 16x9 aspect ratio screen. Either you get a shrunken picture, or you go with partial zoom so the chicks all look like porkers!