mmm and a bec

I have learned my lesson many times of not screwing with things that are working for you, but I do have a 1st gen MMM I have done no mods to and I beat it and so far no hiccups....:-)...but I am thinking of going to the CC HV 85 airplane ESC and running 10s with a 1515/2y...but that is down the road I am happy with my present setup...if I fry my MMM it might happen sooner than later....