I'm confused. Did you do a Dishnitup (upgrade) through Dish? Being an existing Western arc customer (510DVR) did they switch you to Eastern arc? If so, they should not have. They need to come out and fix it....for free. An existing western arc customer who upgrades to Hi-Def gets a 1000.2 covering the 119, 110, and 129. If your HD locals come from an eastern arc satellite (such as the 61.5) then a D500 wing dish with a DP Dual or single LNB is used (or repointed if already there) and connected to the input on the 1000.2 LNB. This allows programing to come from 4 orbial locations. If the locals in your area are not being broadcast in HD, the 1000.2 is all you need. An eastern arc 1000.4 dish receives only MPG4 signals which your 510 cannot process.