hello i just recently purchased a volcano epx...decent truck for the money...this is my first hobby grade rc, i would like to know what is the lowest gearing i could do to it(pinion size, dont know about changing out spur gear) just needing it as low as possible. ive got some tmaxx wheels and tires and 14mm adapters to put on it...next month it will be going brushless. this will be a ongoing project...thanks in advance