Interesting reading, if you believe people will follow the rules that aren't checked...
http://www.rccaraction.com/blog/2011...odys-cheating/
I'm staying out of that discussion. You're right, ROAR doesn't check every engine, just like years ago, nobody checked every motor or battery. Of course back then, too many people thought nothing of "twisting" on the can, to change the timing, and there were still others who put fake battery wraps over their illegal batteries to make them appear legal. I suspect that "spec rules" and "tech inspections" go together, and the first is worthless without the other......