Okay so after talking to a hobby guy at the store, I purchased a new servo. I just got it today and put it in, to my dismay when I attempt to turn the car on, nothing happens. The batteries are fresh and before I worked on it the car would turn on and I could at least play with the steering. Now I have nothing. It doesn't even twitch when I switch it on, so I don't think it is my remote... I even put the old servo back in, and again, nothing. Please help me!  What could it be? Thanks again.