http://www.earlytelevision.org/2010_...tion_RACS.html
As far as I know (and Bob will correct me if he has time), him and John have a pallet of 15G's that are being shipped to France for a rebuilding run. I don't know if they have left our shores yet or any specifics, but right now that's the plan. As stated in the above link, the difficulty still lies in the leaks located in the ultor rings. We know RACS can fix leaks with frit, but that will not work to seal a leaking weld. When I last talked to Bob he was throwing around ideas like using an anodizing process to attempt to fill the microscopic pinholes in the ultor ring, but I believe he is still 'at the drawing board' on that one. Sounds like an interesting alternative to the extremely difficult process of an actual weld, which probably would create more leaks than it seals.