Your springs may have had their day, as the ends of the leaves rub they can create a lip and then movement is restricted so no amount of greasing up will resolve it. Best to inspect carefully. Greasing up the one on the +8 and Roadster, makes a difference, significant on the +8, as they had seen none for several years but only done low mileage.
Last edited by AJSki2fly; 06/12/15 11:34 AM. Reason: Typos