I just called dish and they are telling me that I cannot replace just one joey with a 4K joey. I must replace all of them. This doesnt seem right to me. I have 2 4K tv so why would I want the additional 4K joeys. ( I have 7 tvs in my home. Hopper 3 connected to main 4K tv and I have 6 2.0 Joeys. I only want to replace 1 joey. Why have I been on the phone for 30 minutes to figure this out.