Have a Dish 500 presently installed for 110 & 119 with legacy LNB's and a SW21 switch. I would like to add HD to my programming and have another Dish 500 with legacy LNB's I could install. I have a couple questions: 1) My position is mid thumb Michigan Lat 43, Long -83. I have elevation and mag heading info for each of those sats individually, but with a Dish 500 dual what would be my settings for elevation, Mag heading, and skew?? 2) What is the best way to combine all 4 legacy LNB's to feed my 2 receivers, a 301 and 211K?? With the 301 still need the MPEG-2 channels. Thanks!!