Omegaman scores some real points. Since these cars are a hobby for most of us the approaches will vary to some extent depending on the end result you really want. Almost any approch that leaves the person happy with the results is okay for them. I probably tend to overfix or come close to it in general. That gets you a perfectionist label deserved or otherwise. I know that I never tend to leave any underlying condition behind for several reasons that perhaps only pertain to me in general. Guess its just a personal prefference kind of thing. Neither system is really right or wrong. They exist side by side. Different strokes for different folks comes to mind.