Hi guys, new to the forum just picked up an 05 YZ450, as it is a model year old I'm sure people can tell me what problems to look for, or to head off early. I had a 250 2 stroke and rode a 450 a couple times and knew I had to have one. This bike has only a few hrs on it. I have greased the swingarm and changed the shock spring for my fbda. any oil change advice, do you all take all this stuff apart every oil change?Thanks in advance.