2-3 Shift Feels Harsh or Soft

2-3 SHIFT FEELS HARSH OR SOFT
1. Low oil pressure.
2. Low-intermediate servo apply rod length incorrect.
3. Low-intermediate servo piston, seal, springs, or rod damaged.
4. 2-3 servo regulator valve stuck, nicked, or damaged.
5. 2-3 servo regulator valve spring damaged.
6. Back-out valve stuck, nicked, or damaged.
7. Back-out valve spring damaged.
8. Electronic Pressure Control (EPC) solenoid inoperative or damaged.
9. Powertrain Control Module (PCM) inoperative.
10. No. 9, 10, or 12 check ball missing.