Caster plates? A way to adjust caster

Has anyone ever found a way to adjust the caster on the 2nd gen MDX? Ours was in small accident with a pole, and everything was replaced but the caster is at 3.6 degrees which is at the manufacture limit so it's basically in red. This is creating a tiny pull to the left and we need a way to adjust the caster to get it adjusted slightly back into spec. Please let me know if anyone has a way or aftermarket products that can do this for the MDX.

Thanks!