on my 2003 650fe there are 2 timing marks on the fly wheel the first one goes all the way up the face and part way about 10mm across the top the second one just goes up the front which mark do i use?. set the plug gap and tapetts sorted out carb but still verry dificult to start.when running and you let the throttle off it backfires through the exhaust is this normal on husabergs?some help please :cry: