Graphite paint works good on rusty moldboards. It sticks good to rust, when it wears off steel is shining. Best to shine tracks when dry, keep car inside to keep from rusting.There is a product called "Slip Plate" sold at the farm stores. It is a graphite product that you put between metals. Don't have a clue if it would work for you or not. Don't know how long it would last, might wear off quickly.