We would have preferred to test all the changes separately, but deadlines precluded that. As often happens, our changes only resulted in the Chevelle losing time. We did gain mph, which means we are still moving in the right direction. Traction is the issue. We were still on our somewhat dated 26x10.5x15 M/T ET Street tires. We have a wider M/T tire that we will use in the next session.