If you keep your car clean and don't drive like a hack, fix-at-fail works great if you have a quality car. I'd rather spend time checking for loose fasteners, keeping the car clean, and checking suspension settings, because thats the stuff that will take you out of a race. Don't take this the wrong way because I love working on my RC's just as much as I do driving them, but anyone cleaning bearings every 2 race days has way too much time on their hands, or they race on dirt!
"When you no longer go for a gap, you are no longer a racing driver..." Ayrton Senna
"I dont like being overtaken. It's a sign of weakness." Jeremy Clarkson
"Leave me alone....I know what I'm doing." Kimi Raikkonen
I don't always race RC....but when I do....I prefer road course.