I was just cleaning the valves on my 02 XC 800. The spring's seem to be very worn out and one has a slight bend in it. What would you folk's recommend I install, the softer or stiffer spring's than stock? Or should I stick with stock? I run sea level to 1500 feet. The slides themselves are stock, haven't ever had a problem with them. Sled has SLP pipe/can, V-Force III reed's, SLP airhorn kit & two dash flowrites. Any help would be gr8. Thanks.