Me and my buddy were doing some of our regular maintainance on our 450s today, we changed our oils and air filters checked all fluids, tightened chains and so on. Well this time his bike needed a new chain and both front and rear sprockets. Put hand guards on it, any way, we nearly disassembled half of his YZ reassembled and got both of our bikes cleaned and ready to ride in about 3-4 hours. I can honestly say I really enjoy working on my bike, some people really seem to be disappointed about all the extra maintainance involved in owning 4t, I dont mind it, if it is what I have to do to continue riding the big 4t's then I will do it. Anyone else love working on their bikes? :)