Guys...around how many miles should I consider chaning fork oils & such? I've got 13k miles now and haven't done any service on my forks. Plus, I have the ES model, so not sure if I can just un-plug the sensor/power lines at the top and treat the forks like a 'standard' units. Also, I heard that the rear shock is NOT serviceable on the ES model ... but is it at least possible to change springs on it? In the 'soft' setting, it feels as if the rear end is lower than the front which changes the steering characteristic. Thanks in advance for your collective knowledge!