I always run my engines in fairly hard as like Garage 19 says they dont bed in otherwise....

Obviously you must have some mechanical sympathy and not treat them too brutally....

My friend and i both bought new Honda Fireblades in 1995,I ran mine in fairly hard and he listened to the salesman and ran his in at 3k for 1000 miles,with fairly shit results for him.....

My bike never missed a beat,started first spin,was quicker and more responsive,never used a drop of oil and generally did everything it said on the tin.....

His bike was a poor starter,used oil,and generally was a bag of shit....After numerous trips to the workshop he got pissed off and px`d it for a new one which he thrashed the tits off from day one...that one was mega....