I think there are other factors that need considered: what was the torque to loosen the bolt, are the parts new, clean, etc. also, how critical is the part? I would think a cover is not as critical as a sprocket. Also, how true is the torque wrench? I have seen some that have been abused, not relieved after a torque, and of questionable quality. For example, I have torqued things that have come loose in use. This is a wide open topic that will probably never get a consensus.
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