I called Lippert/Power Gear a few months after I got my coach as I wanted to lube the shafts, but had one of the retraction springs blocking the zerk fitting. The tech that I spoke to was surprised that they still had zerk fittings as they no longer want them greased, which picks up dirt. He said they now recommend a silicone spray, which I am now using. Wonder if there are still leveling assemblies at the manufacturers that still have zerk fittings. Would like to hear from owners who have 2017 and newer coaches.