When we were at the GS Rally last week we paid a "tech expert" $50 to come fix our King Dome. It too would not lock on the correct satellite. I had no problems on the East Coast but here on the West Coast, it would not work correctly. For $50, here's the "fix"..save your money...:W
Press the button for three seconds...the dish will search and lock onto a satellite. If it's not the correct one, press the button AGAIN for ONLY ONE SECOND!...The dish will search for the next satellite. Press it again for ONE SECOND and it'll go to the next one etc. Try this an see if that "fixes" your problem....if it does, please post back...Dennis