Slipping or Rough 1-2 Upshift

1. Improperly adjusted, binding or damaged TV cable.
2. Throttle valve binding or sticking.
3. 1-2 shift valve binding or sticking.
4. Primary regulator valve binding or sticking.
5. Intermediate servo seals cut or damaged.
6. Intermediate servo piston binding or sticking.
7. Intermediate servo piston rod not engaged.
8. 2nd brake band worn or misaligned.
9. Torque converter internal damage.
10. Forward clutch discs worn.
11. Forward clutch piston or seal leaking or damaged.
12. Input shaft O-rings out or damaged.