I WAS ON A YZF-450 IN 03, AFTER RIDING A 250F I REALIZED THIS WAS THE BIKE. I HAVE BEEN ON IT SINCE 10-11-03 I AM AMAZED AT WHAT THIS THING WILL DO WITH ME ON ,I JUMP EVERYTHING I WAS BEFORE AND THE HANDLEING IS UNREAL!! AS FOR THE HARD STARTING ON THE FIRST RIDE OF DAY THE 04 LIKES 2 OR 3 TURNS OF THROTTLE B4 AND IT WILL START ON THE FIRST KICK..