i understand exactly what u mean i only got 120 and im already fighting the urge. i just need to hear her scream with anger as i pass someone.
fuck that.. ride that fucker like you stole it.. break in is BS in my book.. break it in how you want it to perform.. go easy for long life or wind the piss outta it if you want it to run hard.. have a read
http://www.mototuneusa.com/break_in_secrets.htm
i belive in this.. one easy way to tell that this worked was with mine anda buddies pocket bike.. he broke his in properly, i ran the piss outta mine stra8 out the box. mine pulled for in the top end. theres no rider error in a pocket bike, no shifting no real need for throttle control. slam and go. i weigh about 20lbs more than him and i would easily pull up top