Today i started my 2004 yz 250 2 stroke. I decided to take it for a ride around the block. Right After i stopped it started revving really high. I shut her down and started it again but right after it starts it immediately starts to high rev. I have started her many time but get the same results. Prior to riding her i put some fuel in it mixed at 32:1. I must note that it high revs when starting with the choke on. I cant get it to start with choke off. After she starts i turn chock off and it jsut dies. When it comes to small engines im pretty dumb at repairing em. Any info would be greatly appreciated. Thanks