I think the idea is for the tie rods to not be parallel.

Looking at the modern bikes, the tie rods are flatter.  I think if you make the mount to the spindle taller, you will benefit.

Recently there was an episode of Hot Rod Garage where Tony Angelo went in depth of how to fix bump steer on his fishtail Cuda.  I need to watch it again.

I was under the impression you want the tie rods parallel with the controls arms or as close as possible.Buckeyes LT500 in this thread looks that way and he says he has limited bump steer...My 250 with the +2 A arms has ALOT of toe in/out throughout the suspension travel.Trying to reduce it as much as possible.The +2 arms seem to make the problem even worse.