I don't think they realise the pic has been taken from the dish end!! or as you say does not know about the mirror effect. They are good. Be careful with skew for all the sats and the other thing is focal lenghth, this is the actual distance between front of lnb and dish face. I hope you have easy access. There is a smartphone app app as well, you can use to find 19east. By the way when I clicked on your link that picture shows your sat setup while at front of dish!! you can see the slope on the triax bracket. To get you startedm find a free to air channel on 19e east, say what receiver your using, your dish probaly came with a connector for one lnb, use that to find 19east, then remove it and put on bracket, nb 4 lnbs make bracket heavy and will make lnb arm/holder sag a little so you may have to tweak elevation a little. A lot of people use quad lnbs, when it first statred you were advised to use bullet lnbs very slim and light but only one outlet. Thats about all I can remember. good luck and keep us posted. if you have trouble finding free to air channels on all the sats say so. I am away all day but back tonight.