Shouldn't the converter unlock whenever the brake is tapped? If so, what would cause the converter to not unlock until i get to lower speeds? I am also having an issue when I start off from a stop it feels like something is slipping then it catches as soon as I apply more than about 10% throttle. It has the same feeling as if the tire was spinning then gets traction all of a sudden. At first I thought the converter was locking almost instantly but its not. Has anyone had a similar experience with this. Also, the O/D off button on the shifter does not work.