I agree with having to raise the rack. I put a Longacre
bumpsteer gauge on my old WD subframe and it wasn't good (don't remember the range at +2, -2), but the only way to reduce it was to use the Baer Tracker spacers and move the steering arm pivot point lower. But... because the Baer Trackers are so crazy huge in diameter, I couldn't got as low as needed because they would hit the LCA at full lock. The right fix would be to raise the rack. The other issue I had was ackerman. It was basically nuetral at lock, but the only time I noticed it was when I was backing out of a parking spot - low speed, full lock, in reverse. It felt like it wanted to drag the inside tire a little.
My solution was to switch to a DSE subframe.