this guys engine breakin method is well different to most, and I like his theory behind it. but I have a slight issue with opening the carburetor to full throttle and holding it there on a new engine that has mega pinch, I know the engine will be practically flooded with fuel and the rpm even at wot will be significantly low running that rich, but is it still safe to do it on a very tight engine?

I'll have 3 new race engines to breakin next week, an new lrp team engine for my friend an rb mod and another jp mod .12, was just gonna do the heat cycle and traditional breakin method.