I just bought a 2009 400 with 5800 miles I am the third owner. the second owner has had it 2 years put 1500 miles on it with the only thing being done was an oil change. to start out right I was wondering if it would be a good idea to change oil, gear oil, flush and change coolant. take apart cvt clean and lube install new belt, keep old belt in scooter for emergency backup. also was wanting some info on hi performance variator, exhaust, and air filter. and a couple of places to purchase hi performance parts. thanks for any help and advice.