I have a two Dish 500 dishes. One has a DPPlus dual looking at 110/119. The other has a single DishPro looking at 61.5, and that is connected to the DPPlus head. The two outputs from the DPPlus are connected to two VIP211 receivers. I would like to look at 129 to get more HD channels. I am in zip code 28629. Can I simply repoint the single dish from 61.5 to 129 and do a new switch test? Thank you.