Aggression in high end morph babies?

[RandyRemington]

...but theres nothing wrong with an aggressive hatchling ball python as they usually calm down with age but whether it does calm down or not i dont think its necessary to cull hatchlings just because they are relatively aggressive in ones opinion.

The ones I'm wanting to cull from my collection are hissy striking adults that come from lines where I've seen a strong tendency for aggression/defensiveness to be passed from generation to generation and for the hissy striking babies not to grow out of it. But I'm having trouble bringing myself to sell these adult females possible hets off before I figure out if they are het or not.