Baby snake help

[snakekid6996]

I had my first clutch of snakes about two weeks ago. I'm more than excited, however unfortunately I'm having bad luck and I'm not sure what to do or what the problem is. Everything started off fine. 4 out of the 6 ate on the first try, taking it straight from the tongs, but the next day 3 of which had regurgitated. The one that didn't is now eating fine, but none of the others will take any food. Within the past 4 days two of the snakes have been found dead in their enclosure for no apparent reason. I'm not sure if this is something I'm doing wrong or if it's just a bad batch of babies. I need help!
The babies are all kept in 6qt. Tubs in a rack system with paper towels as substrate, and a hide/waterdish. They are kept at a temp. Of about 80°F.
Any help will be appreciated! Thanks!