I know with my Kat..one turn too many, and you can strip the oil drain plug in a heartbeat. 1 turn to less, and u'll be trailing out a stream of oil from the pan. Does anybody else need to use a torque wrench to make sure they dont overtighten their drain plug? Im getting ready to change the oil in my kat next weekend or the following. First time I've had to do it since I got it this past summer. I never needed one on my other bikes, and it seemed to work out ok.