Kick down has 1/2 travel before lever engages valve

When adj to full throttle then when pull out not enough travel to engage. When adj to start of good shift it’s half way home and can’t kick past 1/2 throttle so no 4 bbl and no kick down deu to restricted travel. Can shift manually. But on its-own it 10, 12,14 shift. Pulling pan next week. Got no other ideas Just don’t make sence
You need to give an accurate description. This is a three speed transmission. It only shifts twice, not three times.