I do a "Post-mortem" after every race, and have found little things that didn't quite take me out. A good once-over after several practice runs, usually indicates any issues that may creep up on you during a race. I've had my original nitro 8ight since they first came out. So I'm familiar with the car, and took a few preemptive steps before the first time i ran the new car. Heat shrink on the center CVDs is about all I had to do.