November 10th, 2015, 16:32
Reducing the damping level is pretty straightforward. The 11th entry in a contact point line is the damping ratio. Zero is no damping, which means you'll be bouncing like a rubber ball over every little bump. As you increase that number toward a maximum of 1.0, you'll be adding more and thicker oil into the shocks, so to speak. At 1.0, you'll be have no more rebound at all.
If that's not what you need, then you're looking at changing static compression, default height, and some other stuff. I can't do nearly as good a job explaining it as Jerry Beckwith, so head to his page (download it if you like for future use) and study up: