Originally Posted by Julius

Your point is valid for cars using a front upper a arm. For c hub cars like the serpent cobra, the effect of kickup translates directly into caster though.
That is why it is so difficult to get the caster reduces on cars with upper a arms. Flattening the front lower arms can even increase caster on those cars as the bottom pivor ball can move forward, the upper arm usually also has kickup and there is no room to move it forward enough....