gday so i finally got a `1/10 summit the nice green one with tqi controller, i have just ordered a couple of 12.5kg waterproof servos as the stock ones are lazier than a teenager in the winter and a 2200kv brushless setup and 150a waterproof hobbywing esc,and im goin to be running 4s and possibly 6s but im not sure if i need to change the gearing
so id really appreciate some help

cheers heaps