I have a trailer jack that the manuf. failed to fit with a grease fitting, and the bearing finally gave up the ghost. I'm looking for a replacement bearing, as this is the only thing wrong with the jack, but can't find a supplier. Anyone have any ideas? The bearing is made to take a load parallel to the shaft, instead of perpendicular to the shaft like a wheel bearing. Its probably a $5 part- the new jack is nearly $60.