Yeah, the hormone thing usually isn't too much of an issue but that could be part of what happened with you guys. I thought the same previously as well and then I started just plopping them in and they were much better and healthier after I did that. I can't say it's 100% success rate but it's sure as heck works for me. Can't remember exactly where I learned it from, I think it was from George but I can't say for sure.
Wilds: Wajok, Rutilans, Siamentorialis, Hendra
Leopards: Luna, Astrael, Dorian, Cullen, Gallifrey
African Fat Tails: Nox and Lux
Bearded Dragon: Stormfly