Forward Engagement Slips/Shudders/Chatters

1. Incorrect fluid level.
2. Incorrectly adjusted manual linkage.
3. Low main control pressure.
4. Loose or tight valve body bolts.
5. Sticking or dirty valve body valves.
6. Incorrectly seated or leaking forward clutch piston ball.
7. Worn or damaged forward clutch piston seals.
8. Overdrive one-way clutch damaged.
9. Rear one-way clutch damaged.