I had the same problem: same STB and strong signals reported by the box. I know this sounds idiotic but the STB was not differentiating the two satellite feeds. It was reading the primary satellite. I was simply not getting the second satellite. I ended up having to use a separate round dish, mounted elsewhere, to supplement the oval dish on the roof. Apparently, my tree cover precluded getting both satellites from one location. The second satellite, besides having channels 509 and 199, has some of the Spanish language channels in the low 400s in Spanish. If you receive those in english that is your telltale that you are not receiving the HD satellite, irrespective of what your signal strength tells you. At least that was my story (and it took 3-4 frustrating weeks to find this out).Text