I`d donate the case to you but unless I see something obviuosly wrong when I tear it apart I wouldn`t trust any piece of it as I`d hate to have you rebiuld it and have the same sort of trouble I had with it!
We are thinking maybe there is crack in the case we can`t see or a bent shaft or something like that wrong for it to keep having failures.
I`m thinking of chaining it to the back of my truck and dragging it down some back road till it`s ground down to aluminum dust!