If you are still driving it around, adjust the kickdown cable to get the shifts to firm up and hold gears a little longer. The FSM calls for an adjustment that makes them slow and early. Pull the throttle wide open and hold it. Adjust the kickdown cable so there is just a tiny bit of slack left with the throttle at wide open. Take it for a spin. If the shift points are too high, loosen it a little at a time. Mine has 300k of abuse on it and that has allowed it to make it another year without a rebuild or replacement.