I wasn't able to see a size difference between the hatchlings coming out of the bigger/smaller eggs. That surprised me.
The moss is "Schultz Canadian Sphagnum Peat Moss" and I got it at Wal Mart. It is pretty nice to work with... somewhat similar to vermiculite in properties, covers the eggs nicely, and doesn't leave gray/silver stuff on the snakes like vermiculite does. :)
OH, and how do I stop myself from checking the incubator every two minutes for a crack in an egg!?!?!?! lol
If you ever figure that one out, definitely let me know. ;)
(You think this is frustrating, wait till they decide to pip for 48 hours before coming out! LOL)