For the last couple Yamaha decided flip the engine around. The exhaust and injection valves have switched sides. With this they had to add about 8 inches to the exhaust for it to wrap completely around the cylinder. And on the earlier ones models it did a loop behind the rear shock. They air-box and gas-tank had to change places. The gas-tank is now on the outside of the frame and it looks to be mounted on the subframe. What are your thoughts about it? Might it be the next aluminum frame or is it just something for Yamaha can get attention for?