Has anyone trided rebuilding their 25 shockys ?. I pulled the ones of mine to find they are orinigal. PN 2bj-48530a on the frount and 2bj-48520a on the rear. The two frount ones are good, one rear is us. It would be good to keep them on it. When extedened out their is a nut to strip them. Has aney one tried?