I am having a problem with my 211 holding all 4 sats. I live in STL, have 110,119,118,129. my 722 checks switch fine and gets all 4. the 211 seems to lose sats.
If possible, try swapping receivers and see if the problem follows the receiver (don't worry about TV2, on the 622, this is merely for t-shooting purposes only), or stays at the location.