There was a discussion on another on-line resource and a friend of mine mentioned that Brownells has:
[url]
http://www.brownells.com/aspx/NS/store/ProductDetail.aspx?p=1084&title=STEEL+WHITE[/url]
PVC pipe capped on one end should do the trick for a soak tank.
Sadly, the rust remover will also remove your blue or brown finish completely, but this is a kill it or cure it situation in my view.
I have not tried it, but I value Dave's opinion greatly since he has never steared me wrong in the past 8 or so years that I have corresponded with him.
If you use it, be ready to preserve right after cleaning the surfaces.
CS