I'm having a problem with my Stab HH-90 that I can't figure out, the motor is continually going from the sat that is selected to reference then back to sat, then back to reference, then back to sat over and over. I've tried my Visionsat, my Pansat 2500a, and my Viewsat Ultra and the problem is on all the receivers so it must be a motor problem. Some sats I can get to by going from east of the sat to the sat. If I go from west of a sat to the sat the problem is always there. Going to 72 is a chore that requires 2 receivers, one to move the dish till 72 pops in then shut off that receiver and use one slaved to it to watch. Has anyone seen something like this before?