Contacting Yamaha about it and ensuring they follow up on the case will be a good thing to do, who knows, it might be a case where they have to send someone out to investigate, someone more qualified.I notice a slight noise coming from the rear wet brake also, mainly when going slow or coasting down hill. Took it to Yamaha and they said it was normal and fluid was good. Its not a squeal or grind just a faint rubbing of the brakes internally. They have had a few complaints about it already though. I'm #6 on the list at our shop that has mentioned it.