I have a 2008 DS 450. I bought it new in may of 2009. It doesnt even have ten hours on it and my rear brakes failed. I havn't ridden it for a month because i've been busy. I got on it to put it on the trailer and I had no rear brakes. We checked the fluid and it was full. We tried bleeding the brake lines and it has air in it and while bleeding it black specs came out with it. Has any one else had a problem like this?