Trans Kickdown Linkage Guru Sought

First thing is the pressure valve on the trans, How does it shift as you slowly take off, slow role? does it shift out right ? or douse it shift to early ? and douse it kick down to passing gear for you ? I have put a small nut and bolt in the slide area on the kick down linkage so it move back sooner as I drove it, and adjust farther back if it kicks down to soon..... if it is not shifting in to 2 gear soon enough the kick down is back to far.. and if it shifts to soon I would move my added nut and bolt forward so the pressure valve is getting opened sooner.... be careful, if it is shifting in to 3rd gear to soon you could burn your trans up, low pressure on the clutch packs..