Hi Club Members, I am in the process of restoring my 2018 Performer SS. I am not sure which cleanser I should use to refresh the slightly oxidized black frame. I used some mild liquid soap but it didn't do the job. I don't want to use anything too harsh as it may further penetrate the original finish. Also, I noticed that there are some minor rust developed on some parts of the black frame. Any good way to have this remedied? Any suggestion will be greatly appreciated.