Originally Posted by robk

You don't need auto cad. It's also not really increasing caster, it is causing a more radical dynamic caster effect. Raising the rear link causes the upper arm to move forward under compression, which actually takes away a bit of caster from that side. It does give added grip mid corner.

Add shims to the rear ball and then work the suspension. No need for computer models when you have a 3d model in your hand