I have an 02-954 26,000 miles experiencing cold knocking or Tapping I see the other noise complaints here on this site with no apparant solution... i plan to provide one ... I suspect oil viscosity or carbon deposites... although the bike did vibrate ONE of the spark plugs loose to the point that it fell out and the others were loose when i went to re-install ... I am an ASE certified MasterTech... I use the bike to commute 36 miles a day... At times I Ride the carpool lane at over 140 mph... I need this engine solid... More to Report Later...