Rough Shudder 3-1 Shift at Closed Throttle In Overdrive

ROUGH SHUDDER 3-1 SHIFT AT CLOSED THROTTLE IN OVERDRIVE
1. Improper fluid level.
2. Improperly tuned engine.
3. Damaged or improperly adjusted linkage.
4. Improper control system pressure or clutch application.
5. Improper governor operation.
6. Sticking or dirty valve body.