1:1 terrain sculpting grasshopper

Hi all,

I've been an off and on grasshopper user for a couple years now and I have a question about how to improve my attached definition. My goal is to create a definition that accentuates the existing topography model: raises the peaks, lowers the valleys. Nothing too adventurous. But I want it to do it at a 1:1 ratio, so any peak will increase by the same amount that the valley is lowered. (I'm doing this at the curve level: I will recreate the topo surface after the curves are baked.) How can I tweak my definition to do that?