[Kurt in NJ]

have you lubricated them with spring lubricant as specified in the service bulletins?
there should be a grease fitting on the center bolt— it not for regular chassis grease,spring line is thin oil (specified as ice machine oil about 75%, talc about 24 %and balance ground asbestos) the talc is a polishing and dry lubricant the asbestos probably can be left out.
the bulletin specified a dedicated grease gun and shaking it before use