I am no Car. specialist. But you seem to be a bit in trouble, and may be I can help you with some literature on Car breeding etc. I once bought some paper
"Laboratory methods for rearing soil beetles (Coleoptera)" by Burakowski, B. (1993). Polska Akademia Nauk, Muzeum i Instytut Zoologii , Warszawa 1993", Published in Memorabilia Zoologica Vol. 46.
written in English. It's very helpful in concern to your needs, Hopefully you have some access to your extensive liberaries on entomological matters.