UBB.threads PHP Forum Software Community Forums UBB.threads Version 7/8 Support RSS feeds not working

I'm hacving trouble configuring RSS feeds. I have a board with 9 forums but I only want RSS on 3 of them. I have enabled RSS on those three, but no feed files are ever generated in the cache dir. When I click clear cache, RSS feeds are generated for ALL forums, even ones that are not checked! These are private forums that I do not want feeds for! What am I doing wrong?