Des Moines locals in HD come in on both 129 and 61.5. 61.5 is running well with the HD locals. 129 keeps dropping the locals for anywhere from a few seconds to a few minutes, they come back and then drop again. Talked to a technician who said that he had swapped LNB's only to watch the same thing happen again. This is happening to all Dish customers from what I can tell. SD is fine, no issues. Does anybody have any idea what is going on? This has been happening since friday. If I watched local channels I would have asked a lot sooner.