Hello all! New to the forum. Soooo i bought a 2013 yz450f with 6 hours on it. It probably has around 16-20 hours on it now. I was riding at the dunes on Saturday, bike was running great, shut it off to BS my friends. When i went to kick it back over, the kicker made an awful clanky sound then locked. We could shake the tire in gear and free it, then it would do the same thing with the awful noise and lock again. We loaded it up and took it back to camp. My buddy pulled the tire again with it in gear backward and it made another awful grinding noise, then kicked fine with no noise but would not fire. When i got home. I found the bike was way out of time. One tooth on the exhaust and several on the intake. Also, the intake cam shaft would not move after i removed the tensioner, but i freed it with my hand and it moves easy now. After re setting the time, the bike runs fine (in my garage anyway), although it did take awhile to kick over the first time. I suppose my question is, why did it do this and is anything else damaged? Do i need new chain, guides, tensioner, or what? Could there be damage to my piston? I dont visually see any damage to the chain or sprockets on the cam shafts. Im no mechanic, but id prefer to keep it in my hands if possible. Let me know what you guys think! Thank you.