I´m kind of curios about my 535 I just bought its my first bike and I´m kind of having problems with it. Basically it seems if I try to go quickly it starts spitting and sputtering even making the exhaust sound dif. I just rode it 25 30 miles to work today kept her under 55 didn´t really get on it and had no problems at all. I´m good with cars so I´m figuring the odvious reasons as being bad gas clogged fuel injectors or carb needs worked on. If someone could shine some light on this subject I would mjch appreciate it....thanks!