I used auto cad to duplicate the arcs of both upper and lower rods on my roadster, I feared a radical change in the pinion and kingpin angles.
I found that there was more wheel base change than angle change.
Out of the 5 0r 6 different lenghts I tried, the worse was 7/16" in an 8" ark, or 4" up/ 4" down. The short rods were half the length of the long ones.
All that means is your Okay