I am upset that I can't get my speedometer corrected to an accurate reading. It consistently reads over the actual speed I'm going. When I choose to do the posted speed limit, which I'm legally allowed to do, I now have a safety concern in that I am forced to guess my speed. The company can adjust the device to be accurate but chooses not too, inforceing some notion that doing so will make drivers drive at slower speeds. This is what I justify as tampering. I want it fixed.