I have about 5-7 hours on mine and I just started to notice this louder noise when I am in first gear going pretty slow (about 5mph). I am used to the normal rattle noise but now I am hearing an extra rattle just around this speed under a small load and it is definetly louder than it was the last time I rode before this last time when I first starting hearing the noise. It only happens around this speed and load but goes away as soon as I get on it and get out of that area in the rpm range and the small load. Its loud enough to hear with my helmet on and over my exhaust. It sounds like something is loose and making a noticably louder rattle sound so I checked all the bolts around the engine and exhaust and everything was good. It almost sounds like I don't have enough oil if that makes sense (louder valve noises), but I double checked the oil level and all was good. Anybody have any ideas?