I cannot get 3 receivers to work on a eastern arc 1000.2 dish with a dpp twin lnb. 2 Wally’s and a vip211k that I use with my tailgater. When I hook up the 3rd receiver and run a check switch I will lose one of the other receivers. Any directions and order of operations would be helpful please. I’m also assuming that I don’t need a multi switch with this setup. Thanks!