The TV cable should pull out and return smoothly with the engine running or not.
It may be a cable problem or you may have an internal problem with the TV assembly inside the valve body.. If there is excessive wear in the TV bore , the valve can be hydraulically applied and held in the "full" applied position..
Have you checked the governor plastic gear yet?
Dont worry how old you are... it is the mileage on your body that adds up.