Hi I'm completely new to this. I've just got a rc nitro car 4 wheel drive fazer. mostly using kyosho parts. I'm using a 'acoms techniplus' controller. The car is secondhand but has been serviced by a rc shop. When running the car for the first time i could not get it to reverse. Is this a problem with the car or have i not set up the controller properly? I have lots of different buttons on the controller.