Congrats on your kings. I had an adult pair of SC Mosiacs that I purchased from John Cherry about 4 years ago- bred them one season and had to sell due to space (I regreat it alot now).
I recieved a pair of regular Chain King hatchlings a few weeks ago in a deal... Both refused live pinkies (both in cage and left in a deli cup overnight)...both refused Frozen/Thawed brained pinkies (again left in cage and in a deli cup overnight). I went out and caught some local 5 fined skinks (probably any species would do) for scenting....
Here is what I did to get mine to eat-
- froze the skinks
-defrosted and cut into 1/2 (this was a very small skink)
-Brained a f/t pinkie and used the 1/2 skink as a kinda paintbrush (cut side with insides touching the pinkie) for the "brain juice"...and coated the pink in this mixture (brain and skink smell) ..we all know baby snakes love the smell of pinkie brains for some reason...
-then stuck part of the skink in the pinkie's mouth...
-put scented pink and snake in deli cup ...left in the dark...VOLA- success!
The Chain King was on it before I left the room... Repeated process for the other one...also worked.
Once you get a few meals in them like this I begin using less and less skink scent... soon you'll have them on brained pinks... then a few feeding laters on regular pinks.
Make sure:
-Temps are right for your hatchlings
-They have somewhere to hide (I just use a folded up papertowel ontop of the shavings...simple and they fell secure).
-Do not dusturb them during the feeding process.
-Try to keep handling to a bare minimum.
This is just MY method...there are alot of great keepers here that will give you other tips...these work for me..
On a side note...like crimsonking mentioned... water snake scent... EK's have been the only getula sp. I've ever kept that have ate baby water snakes...nothing seems to want to eat those stinky little snakes other than EKs...LOL!
Good luck...it'll be well worth your effort!