My friend and I have been restoring a wreck of a Silas Hoadley Masonic pull up to wind, table clock. ( I say table clock, because the case is about 4½feet tall, too short to be a tall case, to tall to be a mantel clock . It is back together and running fine. We noticed the pivot "bushings" are all ivory. Should these be oiled? There seemed to be no oil or residue on the pivots and the bushing holes were clean. Any suggestions from Hoadley restorers?