Yz450f 2009 Had a replacement of the head and rings... bike died mid ride. 2 hours total. and now it will start but i hear a noise. either a rattle or solid continuous tick like its draging rings or hitting a valve. i would like some input before i tear this bitch down and do it myself. Is it a common problem? i redid the cam chain to book specs and it was perfect till it died lol. let me know what you think.