You use what I think is a 1/4 inch allen wrench in a slot under the shifter. This aligns the levers all in a neutral row. With the levers secure, you adjust the rods so that the linkage tabs fit with ease on the transmission. The tabs need to be for your car and not for like a 68 road runner. It sounds like you have 1 rod out of adjustment, making the cross over from second to 3rd hard. Should be an easy fix.
You the man, was an easy fix
, the middle rod was way out atleast 1/4 inch now it shifts like a hot knife thru butter
,,,,,,,,,,,, very happy thanks