Talk to 10 different builders, you'll get 10 different answers. I personally have never broke a motor in doing heat cycles. Why?? Because no one ever suggested it. I've heard you want to seat the rings the way your gonna ride it. I've also heard the analogy of dragsters that are tore down and rebuilt every run, do you see them heat cycle and break in motors? Get to the line and let it rip. So stop taking it so personal, that some guy on the Internet, who you may never meet, took a shot at you.