I just completed my first set of mods on my XR650L. Rejetted the carb with a 165 main, 55 pilot, K&N filter, Supertrap exhaust, & smog removal. Looking forward to riding some fire roads in So. Cal this week.It has been suggested by a friend to put a steering dampner on the XR. Any body have advice as to which one is good and exactly what do they do?