[SpEEdyBL]

Just by speculation it appears that dirt can easily get trapped in the esc through the fan vents and short something out. This is what happened to a brushed esc of mine. It deosn't seem like this would be causing bec failure, but who knows? Maybe the bec is most vulnerable. From reading, far too many people are having repeated problems and far too few seem to get the problems solved with a different MMM. If the failure rate is 1 out of 10 (just to make the math simple and castle claims its way less than that), then its 1 out of 100 for someone to have two failed MMM V2 and for the people who had three failed MMMs V2, thats 1 out of 1,000. I'm not saying its user error, but the conditions the MMMs are run/setup in that could be causing problems.