I do the parts on an exchange basis, so as long as they aren;t broken, i take your old set, refurb them and dip them and then they are sold to the next person. if there are chips or marks i clean them up and sand them back first.
its a painted finish, so no edges or lips like stick on stuff. its the original part, so it always fits just like the original part. and you can care for it just liek you do your normal paint work.