One of the break in theroys that I also go by is never keep a steady RPM during the break in period. Rather to vary the rpm up and down. The theroy behind this is that it will cause presuure to be put on the rings in one direction while accelerating, then put pressure on the ring in the opposite direction when decelerating.
The pressure changes are "supposed" to make the rings grab into the cylinder and break them in faster.
The only time that I has a ring failure was on a 4 stroke dirt bike. I heat cycled it and rode it in a field for a short time before going to the desert. Our first ride out, we climbed a pretty steap hill almost immediately after leaving camp. Let;s just say that after that, I never has mosquito problems. They couldn't see me to find me 
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2005 Hammerhead 150
170cc BBK, PnP Big valve Head, A12 Cam, Uni Filter, Custom Exhaust, 10G rollers, 1500 Contra Spring, 2000 Clutch Springs
Just added - 2007 Joyner 250 SV - Let the fun begin
4-Dirt Bikes, Baja Bug and enough toys to keep me in the garage and out of trouble.
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