to be honest mate there is no need to rejst the carb if the air filter and exhaust is standard,rejetting it with bigger jets will just get you a bigger fuel bill and no increase in power or speed.lightweight rollers are really just going to make it pull away a bit quicker they are really needed with a expansion chamber race exhaust as they need the engine to rev to make enough back pressure.
adam bike doctor(of milton keynes motorcycle centre)
January 2011