I wouldn't chance it. You know it works as-is. Who knows what would happen if you change it. Unless you like trading the known (and working) for the unknown (and possible breakage).
Like Arct1k said, run it as is for now until CC fixes the issues and are cought up with repairs and making new ones. Then, use the internal BEC.
ok,masterlike you said... im gonna run the mmm with the bec...until cc fix the problem(I think they found the problem)can i ship the esc to cc for change the bad component ????