The cover plates were removed from the pin at the high end of the jack screw. A grease nipple was installed in each cover plate and a gasket placed between the cover plate and lug. The bolts were replaced with 3/8 UNC X 1 inch bolts made of stainless steel. The screw holes needed cleaning with a tap and RP7. Grease was pumped in to the grease nipple to fill the cavity near the ends of the pin. This was recommended by Kevin and Bob, as the “Oilite” bush is suspected to lose some of its lubricating properties. Feb 1st 2012. Brett.