Need advice on 5 cell speed control

[Finnster]

I've ran 5S on two MM with good luck. One was one that I got right after they came out, the other one was from March after a warr replacement (wifey killed the orig ;) ).

They had diff cases as well. I can't desc the diffs, but if you post a pic I can prolly tell. Don't know if this is a def telltale of the FETs tho. Best case is to just try it and be easy on it at first. I wouldn't use motor brake w/ 5S tho.