I'm relatively new to RC. Started racing last fall. I just bought a B4.1 RTR used (4 races) from a young man that could not make it go straight. So far, I can't either. I reset everything to "out of the box" specs. Rear tires are calbers. I'm racing on an indoor dirt track - very hard,clay surface with dust and silt. Its like racing on ice. I have the throttle turned all the way down and the esc to "very soft". I can not get the rear tires to hook up at all. Where to start? Everything is "out of the box". Any help would be greatly appreciated!