That is smart having both EA and WA LNB when you go camping when there are a lot of trees. It gives you a lot more options. Only the MPEG-4 receivers will work with 61/72/77.
If you are trying to add HD to 110/119 when 129 cannot be used, better to use 72 since most HD on EA is on it. Most HD on 61.5 if for local channels anymore.The 1000.2 EA uses the 61.5 and 72, and like the other EA only works with HD. And signal levels in the lower states are very low, unlike the 1000.2 WA.
A good idea is to have a DPP Twin and a separate dual LNB in case you can only get the 110/119 sat, and use the 61.5 for the HD . (Just in case) Wing it!
Trees can perversely cover sky for 1 of the three sats, no matter where you position the dish.
Just sayin'