I think found a solution to my nasty portivent problem. I tried like crazy to find a nicer set and I ended up sending the housings to Terry Meetz in Brillion ,WI. He did an excellent job of repairing the pits and restoring the chrome. Next,I had to try to repair the inserts and had a broken one that Wheelz replaced for me out of an extra housing. After repairing the pits and imperfections with filler and etching primer I had to try to duplicate the correct finish. I went through various try and resand,and try again techniques. The end solution was quite simple and gave me the best result. I bought some exterior aluminum gloss paint and sprayed on multiple coats over time over perfectly finished primer. After it had dried for a couple days(or 47 beers in Wisconsin time), I lightly scratched it in straight lines parallel to the length with a course scotch brite pad. This gave me the brushed stainless look that I needed without having to try to locate nice inserts,which are getting more and more extinct.