The TV cable is out of adjustment.
This shorter TV link ensures readjustment of the throttle cable and was designed with the carry-out unit in mind.
Package Quantity: 5View Instructions
The TV cable synchronizes engine throttle movement with TV plunger movement. If the cable is not readjusted to ensure proper line rise, the unit may return quickly with soft shifts and a burned 3-4 clutch or band. Sonnax has designed a throttle valve link 77872-01 that is shorter than the OE, so that the installer must readjust the TV cable.