Running down the troubleshooting list for no uphift w/manual shift trans: 1) low fluid level 2) kickdown band adjustment 3) line pressure too high or low 4) valve body malfunction 5) malfunctioning clutch or servo 6) oil pump malfunction 7) kickdown band, apply linkage or servo malfunction 8) front clutch worn or malfunctioning 9) broken input shaft/reaction shaft rings 10) shift lever adjustment. The front clutch and rear clutch are on or off depending on which gear is selected, the kickdown band, low/reverse band are applied differently in each gear. Pressure tests will identify what's happening or not happening.