That is real a difference.
If the springs make the noise I would try to use my procedere. It works real between the layers of the springs.
Also in hope the grease would reach a bigger area wehn you drive a while.
If it's the hanger, I would try a look with a long USB-camera. Than there are very long tubes which you can fix on
the aerosols. Sometimes such tubes where in use for car sensors, have a try at a car-electric or carb service.
René
