Found out my torque wrench was lying to me for 2 years

Took my old Snap-On torque wrench in for calibration in Tulsa after a head gasket job went sideways. The tech said it was reading 18 percent low the whole time, so I was running every fastener 15 ft-lb under spec without knowing it. Never thought to check the thing unless it made noise, and now I'm second guessing every motor I've done since 2022. Anyone else actually send their wrenches out on a schedule, or am I the only slacker here?

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