When you upgrade your vintage or rere (rerelease) Grasshopper or Hornet to Tamiya's CVA (Constant Volume Adjustable) Oil-Filled Shocks, the DT-02 Soft Red Coil Over Shock Springs not only look, but also work so well. Why? You might think it's just a matter of opinion, but there's actually a scientific reason that the dampers set up this easy just pops in your mind. We dig into the synthesis of physics, contrast, extension, psychology,  culture, color theory, cookie science, and color study that goes into this hop-up just working on every level in this episode of the RC Deep Dive podcast.