trans kick down

its elde carb. orginal 2bl. elde intake. the linkage cable is correct or long enough, the leavers on the carb lean toward the front of the car and has no holes that will allowe less distance between the carb and the piviot where the kick down rod attaches. when i lengthen out the rod, it is not long enough to put enough preasure to make the car shift from 1st to second unless you get up to 30 mps. it shifts alright but too much rpm required. so i figure i need more preasure on the rod, the set up has not preasure on the rod for about 1/8 of travel of the carb before the rod is engaged. and i have tried to make both long as i can. so i think i need about an inch more to adjust with.