I know we have been over this. But has anyone had differential problems with a Vinson or Eiger. On page 2 of, "Hey Vinson Owners..Need straight up input." Harw said he has seen several failures. I beleive him. But would like to know how often and to what extent. Do you think it was an assembly mistake? American V. Japanese plant. Or is the diff. just too weak for the power?