[QB93Z]

I replaced my antenna mast because it would fall over on full extension.

If yours is sticking up when you turn the car off, I would suggest cleaning the mast as a first step.

When you turn off the radio, do you hear the antenna motor running after the antenna stops moving down. (It may take two people to determine this.) If so, you probably have a chewed up operating strip. An antenna mast replacement would solve this.

If you have the special tool that will remove (unthread) the nut that holds the mast in place, it is easy to remove and reinstall the mast. Then you can determine if the problem is the mast or the motor.

Good Luck,
Jim