For those of us with the later model KECS system, the default settings for compression and rebound are likely just fine for most situations, however, if you have an older model with manually adjustable suspension, make sure your settings are set where they work best for your weight and road conditions. I have a set of Penske 4-Way adjustable shocks on a race car, so understanding what is what is crucial. The objective of all suspension tuning is to ensure consistent wheel loads. It's the consistency of the loads on the front and rear tire contact patch that leads to a stable and predictable bike. As mentioned, the spring rate doesn't change with preload, but by adjusting compression and rebound, you can have a bike that works well in many different conditions. If you don't like the feel of what you've got, start moving stuff around.