HR20-100 If one disconnects the 119 & 110 wires from an AT9 lnb, and runs a setup of a Slimline3, will the receiver fail a system test with a diagnostic code 42-951 due to a difference in the way the lnb's work? I think this should work. Directv service man peaked my dish and got great signal levels. However, during setup there was a failure on the 101 (a red box with an X). Tech said not to worry --- that is a signal overload issue. When I return from work I run a system test and get a diagnostic error 42-951 -- Alignment or Distribution problem, call Directv. Called the tech and asked him if he wanted to fix this before I notified Directv. He said that he told me that I have a wiring issue and that the existing wires do not meet current install standards. I told him, no, you did not tell me that. Why didn't you fix it? He said because all that work would be wasted when I have my roof redone and go MRV. BTW all wires are 3 years old and professionally installed. Why should they be shoddy after 3 years? During his work I asked where should I have the dish placed using a commdeck, and he showed me. Why this guy assumed that I did not want my signal issue completely fixed at this time, I don't know. Perhaps I am somewhat at fault because I did say that I may replace my roof and go MRV next month.