Burglar -- I apologize for overlooking your PM to me seven months ago. Your question regarded my experience with low speed understeer in my Kaaz equipped 911.

I can feel the KAAZ understeer increasing at about the same rate my engine speed and torque increase. However, my Kaaz tames some of that understeer with more rear axle throttle control - i.e. lifting.

On an autocross course, I would guess higher preload adjustment would be more important in controlling slow speed understeer than on a high speed road course. I think the higher the preload setting, the more lively the chassis. But don't take my word for it; you seem to know what you're doing, and I enjoy following your progress.