Hello am just working up my 2 parts BBS rims. The star is black powder coated and the bed polished. Have a few questions: 1. Which black should I take for the star? thought of RAL 9005 deep black 2. how am I best to polish? thought of pickling, wet sanding, polishing… do you have a product lack for polishing? Borestone attachments and polish? 3. what do I do with the screws? they are quite oxidized. can you do something there? n, or do new ones have to come here? thank you so much! lG mario