I do not regard this as a professional installation. You are right; this is pathetic. If your installer has to declare no LOS, then that is unfortunate, but it happens all the time. The installation of an inappropriate D500 w/DPP twin is not an acceptable substitute for a 1000.x 3-LNB dish! We can tell from your reading of the Menu 6-1-3 page that he doesn't even have the necessary dish up there to begin with. How does he even know you don't have LOS to 129? Was he up there inspecting the dish at all? Seems unlikely.