I've had 2 other bikes that were broken in by the manual.
ZRX1200 and ZX9.
I rode the zrx1200 to 5,XXX miles and the ZX9 to 8,XXX miles.
Not happy with the results with " by the book broke in"
So this time, I have ridden my 250r as if it had 5k miles on it and revs nice and easy.
I now subscribe to the stole it method of breaking it in.