My old shop had a Park Tool TW-1.2 torque wrench that got used on every single carbon bar and stem install. It is set for 5 Nm and you cannot over-tighten with it. We stopped three or four expensive mistakes a month with that one simple tool. People just do not realize how little force carbon needs. That click from the wrench is the sound of not buying a new fork.

Ever buy something just because the box looked good? I grabbed a cheap pair of wireless earbuds that way at a gas station, and they lasted way longer than I thought they would. Sometimes you just get lucky.