Mine were not in bad shape & I was just going to clean them up & repaint but as usual once I took them apart there were issues to deal with. The grease had hardened completely & required lots of mineral spirits to dissolve. There were some ball bearings missing, I was able to pick up replacements from a bicycle shop and one of the bearing retainers was weak so I reinforced with a slice of plastic & epoxy. One of the rollers had locked & flat spotted so I did my best to get it back to round. After painting & reassembly they seem to work very well.