Ah, can we assume that the rod failures then, are due to seriously high rpm under light loads? Ever throw a prop and the engine keeps running and winds up something awful? I've always wondered what might happen if you didn't kill the engine under such a situation.

In any case, the rod failures are with glow fuel, so is it due to poor rod design at the get go? Like Norvel rods? Perhaps the solution is to just pop in an OS rod as I'm doing on some Norvels?