I seen a buddies stock cam tensionor with a little over 20,000 miles on it and some of the plastic was missing. I have a 04 Night Train with 32,000 miles on it and i've been thinking about installing a S&S chain drive tensionor on it. Has anybody instaled one? I was also thinking about changing my cams at the same time. My bike is stock except for a set of Vance and Hines big shot shorts and a K&N air filter. I would like more low and mid range tork. I'm also carberated.