Have been doing a few motorway/A1 runs recently & found that whilst the bike is happy to plod along at 80mph+, I am getting buffeted around a bit. Therefore I was considering the screens available on the Yamaha website. Only problem is they are only available for '04 - '06 models (mine is '08). Has anyone fitted a screen to '08 XTX; & if so where did you acquire it & was it worthwhile??