I know you are suppose to..
I talked to a en "expert today" and he told me that you can feel it when you are tightening the bolt. If it gets lighter after as you are torqing it, unscrew it and try another one, is what he said. He used to do Cossie engines for a rallycrossteam. Ha said the cossie ones could be used around 3 times..
What about the Renault bolts???