Whats best to clean up my headers.

As the title says im looking for a good solution to clean up my hedman huslers. These are them. http://www.jegs.com/i/Hedman/500/78056/10002/-1?parentProductId=744781

I called hedman and they said that i can use any metal polish on the scratches and stuff but do not do the entire header. They told me to use soap and water which I am doing now but I don't seem to be getting anywhere. Anyone have a solution out there. Do you think i can get away with the metal polish? I dont want to screw up the coating and see surface rust or anything like that down the road if I do.

Thanks for any suggestions!
-Joe