Tech chat doesn't know what they're talking about apparently. Anyway, with your setup, you are on a "hybrid" Eastern Arc and Western Arc setup. Sat 61.5W is on Eastern Arc. Sats 110/119 are on Western Arc. You need to either switch to full Eastern Arc, or full Western Arc in order to receive those HD channels. Those two channels are on sat 72.7 for EA and sat 129 for WA.
Western Arc consists of sats 110, 119, and 129. Eastern Arc consists of sats 61.5, 72.7 and 77W.
Your typical choices depending on LOS would be either to point your wing dish currently pointed at 61.5, to 129, getting a 1000.4/1000.5 and setting up Eastern Arc, or getting a 1000.2 and set up Western Arc.
You will either need to call DISH to have a tech come out and do it, or buy your own equipment and/or aim the necessary dish(es) yourself towards the satellites you choose.
Oh and keep in mind if any of your receivers are not ViP receivers, you will need to stay on WA in order for those to work.