Does anyone know if the Lockup Clutch function on our 5 speeds can be programmed for different parameters? Since the lockup is controlled by the ECU, I thought Allison may be able to make changes. Mine free wheels through 1st and 2nd gear when retarding the throttle, sometimes at speeds close to 30 mph and requires constant brake action when coming out of lockup. Obviously, the jake is inoperable during lockout and is only good for 3rd, 4th and 5th gear.