IIRC they are still made by a TOG employee, but not mass produced by TOG anymore. John from TOG maybe?? I never had any issue with mine, but I can't use headers anymore so... Mine were from years ago, so I can't speak of the newer ones. I know they are supposed to have had some recent revisions as well. They have been out of regular production for years I believe. Briefly sold in small runs to INTENSE and ZZP and now pretty much low quantity runs on his own. Don't quote me, but I think that is how it went.
I personally think the TOGs are the best ones currently offered. Have to see how the new ones from ZZP and other vendors compare. I'm not a big fan of the cheaper ones on the market from what I've seen, but heard lots of people that like them as well.