Recommending 25% compression is fine if you know the spring rate. But are the repro springs consistent and per Ford spec? I just retightened my tie rod ends because my steering was squirrelly on rutted roads. I originally had the caps screwed in to the point where the cotter pin would must fit into the slot. Now I went 2 1/2 turns beyond that, and the car tracks much much better on rutted roads. I'd say set it, test drive, and readjust as needed. Remember, every time you change the tightness of those caps you have to reset the toe in.