Trying to help friend align his dish, a 1000.2 and we can get 61.5 signal but we cannot get the 72 sat. Any tips would be greatly appreciated. By the way, 61.5 is coming through the lnb on the right if you are standing behind the dish. It is the one that's for 61.5 and 72. One other question, do we need an external switch or is the switch built in? Thanks in advance.