You are looking at a $2K tranny and $2k engine rebuild eventually. Running on one gear is not what the car was designed for. And constant 3500RPM (cruising?) is probably not good for the engine too.
On your previous threads, you were advised to check/fix the MLPS ($50 part+labor) and/or shifter cables for it. As you refuse to listen to posted advice, well..., it is your car.
