From what I have read and heard from many sources is that hatchling mortality rates have as much to do with breeder husbandry issues as they do with novice owner issues. Seems that the so called 'hatchling failure syndrome' proposed by some tort breeders is rather an excuse for poor breeding standards and conditions.
To this end, choosing a respected breeder is paramount when it comes to torts. There are many breeders that churn out hatchlings, keeping them in substandard conditions. You want a well started baby that has a history of good feeding, has had ample UVB and no signs of illness. Also, to avoid pyramiding issues, you want to get a hatchling that has been started out in proper humidity and soaking practices.