hi. just got home. i tried asking around the office, but no one seems to have an adult RES. i'll try asking my brother if he knows someone.
and about the cuttlebone... like veggies, you can overfeed them (never with pellets). they say an RES would stop eating cuttlebone if it feels like it has enough calcium. i dunno if it's true though.. jut make sure you tear off the hard part of the bone.