jochirin. Did you get the one by the lake. I only callibrated like three and i got the grid. I don't know.f If you go near the lake and run around it hittin x you can find the tower across the lake. Then you can attempt to callinbrate it. Warning: It is a reverse memory game. They tell you keys and you put the sequence in backwards. We had trouble finding the lake one so i assume that is the one you are missing.