When the calibrated torque wrench (and it's always calibrated) shears a bolt right off? On a bolt with as little access as possible--say the upper right fork pinch bolt. You know, so the fairings block anything bigger than a ratchet wrench. I get to pull either the upper triple, or the whole front fairing and roll the dice with an extractor. Of course, extractors have a worse track record than bolts around here. Bah! Needed to let off steam.