Just did an oil change with the recommended oil, Lucas semi synthetic for wet clutches not Kawasaki, and a k&n oil filter. Have not a problem in 200 miles or so until the other night during a bike night I was getting on it heavy and hit 3rd gear and there was a good deal of slipping going on. Not terrible bad but definitely noticeable. I guess my questions would be has anyone else had this problem on any bike, and how could a clutch be slipping at 17.5k miles. The bag has been gotten on from time to time but usually ridden just cruising. Am very confused have never had just 1 gear slip, all other gears are fine. Any help would be greatly appreciated.