All Upshifts Mushy, Early, or Pile Up

ALL UPSHIFTS MUSHY, EARLY, OR PILE UP Mushy, Early, Soft, or Slipping 1-2 Upshift
1. Low main control pressure.
2. Valve body bolts loose or too tight.
3. Valve body or throttle control valve sticking.
4. Governor sticking.
5. Kickdown linkage improperly adjusted, sticking, or damaged.