I have more rain fade with my superdish 121. I put my dish 500 back on the side of the house and can improve the signal for 110 and 119 by 20 . Can a dish pro twin that only needs 1 wire for both 110 and 119 be combined with the 121 signal only from the superdish with a dp 34 switch . I heard something about a dish pro dual were that the 2 wires have 110 and 119 separated. Is this a legacy lnb? On ebay some people seem to talk as if the dish pro twin and dual are the same thing. Any guidance would be helpful.