I am on eastern arc and have a 222 that has bad video shutter (By that I mean the video is choppy and lags). It is on all channels but is worse on the SD channels. Dish has replaced it once, and my new one is better but is still not fixed. I have tried putting my 622 in place of the 222 to make sure it is not the wiring and my 622 was fine. I read in some posts that the 222k is more stable than the 222. I don't know what to do next, any ideas?