Tinker with it the changes are huge on handling. There is a video posted on here somewhere from Skinz on how to adjust the shocks and why. The Evols are an option that changes the sled. In the video they talk about sag and how much you should have. Mine was off from the initial settings, I am still learning the suspension setup on my new machine and falling off in the process. This 16 is proving to be a bit of a learning curve for me or maybe I am just a slow learner.
There was another thread about this somewhere in the pro climb section I posted a link to the fox website that gives you a decent window to know where to start tinkering from.