Unless you’re able to find someone that has a damaged one there aren’t any parts for it, as was already stated above.
But just get creative at your local home improvement store and I think you’ll be able to find something that you can make work. An Amazon search is where I would start.
As a furniture maker I know there’s plenty of rubber feet that I use that are available so I think you’ll be able to find something that you can fit into the molded areas on the bottom of the Cendence.
Good luck and happy flying.