Can you add a few details?
How long ago did you make the split?
Did you introduce a queen?
Did you expect them to make there own Queen?
The start of the split is detailed here:
http://beesource.com/forums/showthread.php?t=240631
It was intended to be an even walk away split, but wasn't quite. Twice I've added a single frame of eggs / larva / brood / stores to the weak hive. The second time was about 3 weeks ago, which was about 3 weeks after the first time.
Queen cells you speak of: was this the frame that you put in 21 days ago?
Yes, thinking back I think there was at least one open queen cell on it already. It was half way up the frame, on one side. Supercedure? The last time I added a frame of eggs / larva / bees was about 21 days ago.
Are these larva you see in a gunshot (shot gun bird-shot) pattern or in a tight cluster with few cells in area missing larva?
A tight cluster, about 2 to 3 inches in diameter. I looked around for a queen, but I'm not good at spotting them yet. I look for a circle of attendants, and a bigger rear end, but I still never see her.. My 8 year old can spot them a mile away though, go figure...

Most of the active area covered by bees is full of cells half full of nectar. However there are 5 other drawn combs that are empty with no bees... I couldn't spot any eggs, just the larva..
If you added the frame of eggs/young larva 21 days ago you would expect a queen to emerge somewhere around 13 days give or take a couple. Then with good mating weather you hope to see brood in two weeks from her. It can take up to a month if there is poor weather for her to fly and mate.
Until this last week, we only had a handful two non-rainy, above 60 days in a row. Now it seems like summer is actually here.. It messed with our crops, so I'm sure it messed with our bees... Sounds like maybe I'm OK and I should wait and see?
Hope this helps. Please answer questions. I think they will help with advice.
It helps immensely. Thank you much for taking the time to get back to me. This forum can be a good resource! I should probably find a local mentor though I recon :doh: The queen right hive looks great though. I moved a medium of new, empty, foundationless onto it and the girls are currently pulling 6 of the frames out...