Cal trac /mono leaf results

Did you scale the car? Have you tried staggering the preload? It looks in that latest pic like the left side is a hair higher both front and rear. In terms of shocks - I don't think stiffer is what it wants. If it sticks and then bounces I'd raise tire pressure, add a hair more preload on the right rear, and soften the shocks - one change at a time. If you can get into a rental it might be easier to sort. Two runs on a changing track isn;t going to help much if you don't already have the baseline.