Hi guys I just bought a 2000 450S with the intention of using it for icefishing, hunting, and letting my fiance ride it around. Well I have a few ?'s for you guys. I am going to me changing all fluids, sparkplug,airfilter,and checking the valves. I would like to flush the diff fluids out. What is the best way of doing this? Just pour a bunch in and let it drain out, or should I drain the old and fill with new then drive it for a bit and drain and refill?? Also the quad needs rear brakes, I can fully depress the pedal and lever. Where is the cheapest place to get shoes from, and what are the best shoes to get? I've never changed drum brakes so if anyone has any old posts, pics, or tips they can share it will be appreciated!! The other thing I needed to know is how much of the stuff is interchangeable with my 2000 450S and other year S's and ES's (I may try to get different colored plastics)?? I am not gonna get to crazy modding this thing up, it's gonna be more of a work machine, I just want it to be mechanically great. Thank you for any tips or answers!!