I have tiger worms in my
Humanure (Joe Jenkins) compost system (in the bins). We put kitchen scraps in there as well. Sometimes it's urine separated sometimes not, and the bins are open to the rain, but there is a lot of dry/carbon material in that system too, much more than I would use in a worm farm.
Worms are not necessary for that system (and I'm wondering if it means it's not getting hot
enough). Is there a reason you want to use worms?