Engine Overspeeds on 2-3 Shift

ENGINE OVERSPEEDS ON 2-3 SHIFT
1. Incorrectly adjusted linkage.
2. Oil pressure control system or improper band or clutch application.
3. Damaged or worn high clutch and/or intermediate servo.
4. Cut or leaking intermediate servo piston seals.
5. Dirty valve body or sticking valves.
6. Broken converter damper and/or hub.