[DMXF]

I understand those issues Tom. Being on the steep part of the ackerman learning curve is in large part a result of trying to correct the bump steer. SA bent the steering arms in to clear the Halibrand wheels and in the process they made bump steer worse and reduced ackerman. I have a set of original unbent arms I'm investigating using, in part because of a recommendation from the owner who races his original car in slaloms. Going to the straight arm will improve bump steer, along with other adjustments, but it will also increase ackerman, which so far looks to be in the ballpark of pretty good as is for general all around and higher speed use. It's sounding like the slalom car owner may like the straight arms in large part because he's operating more in very tight low speed turn environment where a higher degree of ackerman may be more beneficial. Another guy who races his car on the vintage circuit said he tried playing with steering rack movement a little and didn't like the on-track result of one move he made, so it's obvious one needs to have a good understanding of all the nuances of steering and suspension optimization and the ackerman is just part of the picture. Thanks for the computer program recommendation.