Very good point Tracee. The tiniest crack spells freedom for young corns. The space that the wire going into the viv is making may be all the little one needs. Some sort of weight on top (like a book maybe) might help with that. Little as they may be, they can be quite strong in their quest for escape, so that will keep it at bay... at least until it gets bigger.
Make sure that for the acclimation period (about 5 days) you place the tank in a low-traffic area. This will give the little one time to adjust to its new home with minimal stress. This also means no handling too. (I know I know... it'll be hard, but it's in your new snake's best interest.) Hatchlings can be easily stressed, as I'm sure you have learned about by now. Any tiny little thing can turn them into a basket case, which can give you a mess of problems.
Have you decided what kind you are looking for yet?