Hi, I am new to the 4WD area of racing. I just bought a MR4TC Pro and am needing some help. I need to find out what parts are the weakest on the car so I can either step them up or just get plenty of extras. Also, I need to know if anyone can tell me of any hop ups I should use to make the car stronger and maybe quicker. Finally, can any of the parts listed as for the MR4TC go on any of the model or just for the basic model of the car.