Now that Banks has disproved the benefits of flat back differential covers ((Mag-Hytek) Check out his YouTube videos on the subject). I'm curious to know if anyone has ever had a failure due to a flat back diff cover. If they don't add any benefit other than being eye candy that's fine with me. Everyone should spend their money how they see fit and outfit their rigs however they want. But if they are doing damage should owners with flat back diff covers remove them? Or are the negative affects so small that if you already have one installed that you should just leave it be?