Just a curious question: Got a 2000 LC4E with 25k on the clock, routine maintenance includes fork oil change every year. Contemplating replacing the fork springs with a bit stiffer set (I'm 5ft 10, 210lbs). Also thinking about a new shock spring! When do you guys rebuild the rear shock, replace the inner fluid and fresh nitrogen? What's the necessary frequency of that process? BTW, there's no leakage, no oil visible on the shock, and the linkage gets fresh grease annualy! I don't race, ride some offroad, nothing extreme, bike handles ok for me. Thanks for your ideas / replies!