Hello, I'm Chris. Thanks for visiting Just Answer.
Converter alone failure is not common on this model but other causes not addressed which result in converter failure are common. These things need to be checked for both your air/fuel mixture and for your concerter issues, fuel pressure regulator leak, engine misfire, dirty fuel injectors, coolant consumption, misreading MAF sensor, vacuum leaks.
You mentioned your converters are bending, this sounds more along the lines of faulty engine mounts allowing the engine to torque to much to the side when under load, thus twisting the exhaust and damaging the exhaust system.
Hello,Sorry for not answering earlier, I went to the garage, and got the spark plugs, the PCV hose and the crank sensor changed and now it seems ok. So thanks for your suggestions, I will keep it in mind if ever something else occur. Thanks,
Glad it worked out.