Owing to the fact that there are two positions for the steering arm post, you can actually get quite a bit of adjustment in the Ackermann for the front end. Setting the car to the long wheelbase and leaving the post in the short wheelbase position will make the steering rods much straighter. This should promote more corner speed, but be less aggressive entering the corner. Likewise, the short wheelbase with the post forward would put quite a bit of angle into the rods, which would be pretty aggressive on corner entry.
Long wheelbase with steering post back (short w.b. position)
One other aspect to think about is the caster link on the upper arm. This is something that may or may not make a hug difference. Theoretically, a shorter link would have more change in caster as it moves through it's travel than a long link. This really only comes into play if there is a big difference in the heights of the inside of the camber link and the height of the caster link at it's rear - essentially the dynamic caster effect.
These are just a few things to think about or try on your car. If I have time I'm going to see what they do myself next time at the track.