What did you do? FOC, or metal gears?I know if i go brushless I"am going to need to completely overhaul my drivetrain to handle the power. on the MM it says it can only handle up to 3s, can it handle more without melting? the main reason im going 5s is so i can faster then my neighbor, lol but i think i might just use one of his 4s batteries with my setup to see how it runs, then if i want any faster i can just order a 5s.