i was not too happy with the feel of my trans, when shifting it felt kinda like the gears were grinding(i could feel the gears meshing with eachother.). this has been my only complaint about my bike so far. i spoke with several kawasaki mechanics and they said it was normal but, recomended switching to synthetic oil. so at @1000 miles i switched to motul 300v 4t 10-40, and it is night and day different. i am now 100% happy with my bike, it shifts soo smooth and quiet. i think i picked up a little power too. i highly recomend switching to systhetic oil for anyone who wants a better feel from the transmission. motul oil rocks!